turdle

If its a traditional transducer without side scan, then it's shooting out a cone shaped signal, and the size of the cone depends on the frequency that you're running. As you can see in the image below, the depth displayed is never the actual depth below the boat, but the shortest distance between the transducer and the first return signal.
You will never get the transducer installed exactly plumb as the pitch of the hull varies depending on the boat speed, and roll changes depending on how the boat is loaded on the day. You're over thinking it. Just install the transducer pointing down when the boat is on the trailer. As long as its not out by 5 degrees or more, you are going to get decent readings. 

If its a traditional transducer without side scan, then it's shooting out a cone shaped signal, and the size of the cone depends on the frequency that you're running. As you can see in the image below, the depth displayed is never the actual depth below the boat, but the shortest distance between the transducer and the first return signal.
You will never get the transducer installed exactly plumb as the pitch of the hull varies depending on the boat speed, and roll changes depending on how the boat is loaded on the day. You're over thinking it. Just install the transducer pointing down when the boat is on the trailer. As long as its not out by 5 degrees or more, you are going to get decent readings. 

I think SEQWater did a close to perfect job this time around. Lessons learned from 2011. I thought the media and the types of questions asked of the SEQwater spokesperson were really unfair. They timed the water releases near perfect to minimise both flooding and the risk of the Dam overfowing, but the media wanted someone to blame.

Port of Brisbane is responsible for the dredging of shipping channels in Moreton bay, as well as the stretch of river up to Breakfast Ck. Upstream of breakfast creek is MSQ's jurisdiction, and due to the depth of the river, and the type of vessels that travel upstream, all they do is maintain the navigation aids to allow for safe passage along the naturally changing channels.
The authorities could dredge the river to 100m deep, and the exact same flooding would still occur. The water is tidal, so making it deeper will not allow more outflow flow volumes. 
Wivenhoe dam is what's used for mitigation, and it did a great job this last week saving Brisbane from catastrophic events. Just last week SEQ water put out an alert that forecast modelling predicted 100-200mm of rain in the upper catchments, so planned to release large volumes of water from Somerset into Wivenhoe (less than 60% capacity at the time) and estimated the water level of Wivenhoe to increase by about 0.5m. Then the heavens opened and some of the heaviest rain ever recorded fell for 3 days straight and the dam level went up
25th - 80% 26th - 142% 27th - 184% Up until the night of the 27th, they had not opened the floodgates on the dam, and the Lowood river gauge (brisbane river, not far downstream from dam wall) had hit its first peak just from inflow from other nearby catchments - see image attached.
If the dam was not there, the flooding would have been much much worse.
If they had opened the dam gates earlier, the flooding would have been quite a bit worse.
If they kept the dam closed, and it didn't breach the fused flood gates, the flooding would have been marginally better than what occurred. 
If they kept the dam closed and the flood fuses opened the gates, flooding would have been a lot worse
If the flood gate fuses failed and the entire wall failed, a lot of Brisbane would not exist today.
Flooding is a part of living in Brisbane. If you want to live close to the river and in low lying areas, you need to make sure your house is above the flood level, and you have suitable insurance.
Another image attached showing the extent of the Brisbane river catchment, and flood plains. That's a lot of area directing water into a rather narrow Brisbane river.

Port of Brisbane is responsible for the dredging of shipping channels in Moreton bay, as well as the stretch of river up to Breakfast Ck. Upstream of breakfast creek is MSQ's jurisdiction, and due to the depth of the river, and the type of vessels that travel upstream, all they do is maintain the navigation aids to allow for safe passage along the naturally changing channels.
The authorities could dredge the river to 100m deep, and the exact same flooding would still occur. The water is tidal, so making it deeper will not allow more outflow flow volumes. 
Wivenhoe dam is what's used for mitigation, and it did a great job this last week saving Brisbane from catastrophic events. Just last week SEQ water put out an alert that forecast modelling predicted 100-200mm of rain in the upper catchments, so planned to release large volumes of water from Somerset into Wivenhoe (less than 60% capacity at the time) and estimated the water level of Wivenhoe to increase by about 0.5m. Then the heavens opened and some of the heaviest rain ever recorded fell for 3 days straight and the dam level went up
25th - 80% 26th - 142% 27th - 184% Up until the night of the 27th, they had not opened the floodgates on the dam, and the Lowood river gauge (brisbane river, not far downstream from dam wall) had hit its first peak just from inflow from other nearby catchments - see image attached.
If the dam was not there, the flooding would have been much much worse.
If they had opened the dam gates earlier, the flooding would have been quite a bit worse.
If they kept the dam closed, and it didn't breach the fused flood gates, the flooding would have been marginally better than what occurred. 
If they kept the dam closed and the flood fuses opened the gates, flooding would have been a lot worse
If the flood gate fuses failed and the entire wall failed, a lot of Brisbane would not exist today.
Flooding is a part of living in Brisbane. If you want to live close to the river and in low lying areas, you need to make sure your house is above the flood level, and you have suitable insurance.
Another image attached showing the extent of the Brisbane river catchment, and flood plains. That's a lot of area directing water into a rather narrow Brisbane river.

Port of Brisbane is responsible for the dredging of shipping channels in Moreton bay, as well as the stretch of river up to Breakfast Ck. Upstream of breakfast creek is MSQ's jurisdiction, and due to the depth of the river, and the type of vessels that travel upstream, all they do is maintain the navigation aids to allow for safe passage along the naturally changing channels.
The authorities could dredge the river to 100m deep, and the exact same flooding would still occur. The water is tidal, so making it deeper will not allow more outflow flow volumes. 
Wivenhoe dam is what's used for mitigation, and it did a great job this last week saving Brisbane from catastrophic events. Just last week SEQ water put out an alert that forecast modelling predicted 100-200mm of rain in the upper catchments, so planned to release large volumes of water from Somerset into Wivenhoe (less than 60% capacity at the time) and estimated the water level of Wivenhoe to increase by about 0.5m. Then the heavens opened and some of the heaviest rain ever recorded fell for 3 days straight and the dam level went up
25th - 80% 26th - 142% 27th - 184% Up until the night of the 27th, they had not opened the floodgates on the dam, and the Lowood river gauge (brisbane river, not far downstream from dam wall) had hit its first peak just from inflow from other nearby catchments - see image attached.
If the dam was not there, the flooding would have been much much worse.
If they had opened the dam gates earlier, the flooding would have been quite a bit worse.
If they kept the dam closed, and it didn't breach the fused flood gates, the flooding would have been marginally better than what occurred. 
If they kept the dam closed and the flood fuses opened the gates, flooding would have been a lot worse
If the flood gate fuses failed and the entire wall failed, a lot of Brisbane would not exist today.
Flooding is a part of living in Brisbane. If you want to live close to the river and in low lying areas, you need to make sure your house is above the flood level, and you have suitable insurance.
Another image attached showing the extent of the Brisbane river catchment, and flood plains. That's a lot of area directing water into a rather narrow Brisbane river.

Port of Brisbane is responsible for the dredging of shipping channels in Moreton bay, as well as the stretch of river up to Breakfast Ck. Upstream of breakfast creek is MSQ's jurisdiction, and due to the depth of the river, and the type of vessels that travel upstream, all they do is maintain the navigation aids to allow for safe passage along the naturally changing channels.
The authorities could dredge the river to 100m deep, and the exact same flooding would still occur. The water is tidal, so making it deeper will not allow more outflow flow volumes. 
Wivenhoe dam is what's used for mitigation, and it did a great job this last week saving Brisbane from catastrophic events. Just last week SEQ water put out an alert that forecast modelling predicted 100-200mm of rain in the upper catchments, so planned to release large volumes of water from Somerset into Wivenhoe (less than 60% capacity at the time) and estimated the water level of Wivenhoe to increase by about 0.5m. Then the heavens opened and some of the heaviest rain ever recorded fell for 3 days straight and the dam level went up
25th - 80% 26th - 142% 27th - 184% Up until the night of the 27th, they had not opened the floodgates on the dam, and the Lowood river gauge (brisbane river, not far downstream from dam wall) had hit its first peak just from inflow from other nearby catchments - see image attached.
If the dam was not there, the flooding would have been much much worse.
If they had opened the dam gates earlier, the flooding would have been quite a bit worse.
If they kept the dam closed, and it didn't breach the fused flood gates, the flooding would have been marginally better than what occurred. 
If they kept the dam closed and the flood fuses opened the gates, flooding would have been a lot worse
If the flood gate fuses failed and the entire wall failed, a lot of Brisbane would not exist today.
Flooding is a part of living in Brisbane. If you want to live close to the river and in low lying areas, you need to make sure your house is above the flood level, and you have suitable insurance.
Another image attached showing the extent of the Brisbane river catchment, and flood plains. That's a lot of area directing water into a rather narrow Brisbane river.

Actually the outboard engines are designed and tuned to run on 91-93ron. Yamaha specifically states that if you encounter engine troubles/roughness, it may be due to the use of premium or high energy fuel, and recommends only using standard fuel. Economy also suffers when using high octane fuel. 

But now I'm leaning towards a Stejcraft. The arse end looks very similar. Even has the exact same handles.
 

But now I'm leaning towards a Stejcraft. The arse end looks very similar. Even has the exact same handles.
 

But now I'm leaning towards a Stejcraft. The arse end looks very similar. Even has the exact same handles.
 

Looks very similar to this boat, but longer, with a taller cabin and stern drive.

Looks very similar to this boat, but longer, with a taller cabin and stern drive.

Anyone near the seaway/wavebreak tonight?  The tide gauges are showing a ~1m fluctuation in water levels from the tsunami. I bet the fish are a little confused at the moment.

 
https://apps.des.qld.gov.au/waves/graphs/gcseaway_tide.png

Anyone near the seaway/wavebreak tonight?  The tide gauges are showing a ~1m fluctuation in water levels from the tsunami. I bet the fish are a little confused at the moment.

 
https://apps.des.qld.gov.au/waves/graphs/gcseaway_tide.png

Anyone near the seaway/wavebreak tonight?  The tide gauges are showing a ~1m fluctuation in water levels from the tsunami. I bet the fish are a little confused at the moment.

 
https://apps.des.qld.gov.au/waves/graphs/gcseaway_tide.png

Anyone near the seaway/wavebreak tonight?  The tide gauges are showing a ~1m fluctuation in water levels from the tsunami. I bet the fish are a little confused at the moment.

 
https://apps.des.qld.gov.au/waves/graphs/gcseaway_tide.png

Anyone near the seaway/wavebreak tonight?  The tide gauges are showing a ~1m fluctuation in water levels from the tsunami. I bet the fish are a little confused at the moment.

 
https://apps.des.qld.gov.au/waves/graphs/gcseaway_tide.png