bicter

Use a bit of loctite on the threads for a simple fix, otherwise use nyloc nuts or shakeproof washers to prevent nuts loosening. Assume you're aware of the risks of electrolysis when bolting dissimilar metal together in a marine environment.

Cant recall which motors you're running but the majority of outboards have the capability of being pull started once you remove the cowling.

HI Aussie123, 
New member here and first post so please be gentle
I downloaded and unzipped your .usr and .rte files. I've yet to load them on my Lowrance Hook2 and test it out.

On viewing the files in the zip, it appears the routes that are in the zip file are for the Nth end of Moreton bay.

Do you have any files for south of Green Island?

Thanks in advance

Terry