HELP GT-40 No Start

Alright guys, some great news, the problem is fixed! I did cheat a little bit and have my friends electrical engineer help me. He does electrical installations on big boats so he knows his stuff. Its funny because the first thing he said when he shows up is "ya its probably just a bad connection somewhere" which is all ive been hearing on most of these threads. It took him from 8.a.m. to noon to figure it out. It was a corroded connection with the ignition breaker in the black box under the dash. Cleaned it off with a flathead screwdriver and it starts every time!! He only charged me for three hours of work at $60 an hr which I thought was a deal, I threw him $200 and said keep it. Hope he answers my calls next time :)
I really do appreciate all of the help from you guys. I did buy a multimeter and a test light and payed close attention to what he was doing so hopefully when this happens again I can track it down myself. But for now, I have piece of mind and most importantly, enjoy the boat! Now we can start putting some time into the huge list of projects that are a little more fun! Well, after I pull the engine and change out the rusted oil pan lol! Any down side to putting an aluminum one in?

Thanks again guys, will try to get some pics up soon!

Gary S wrote: coat it with something, coal tar epoxy or one of its modern equivalents.

Gary,
Modern? Maybe you need some updating?
Coal tar epoxy is still around and a common coating. Here it is at McMaster Look under "epoxy coatings" then severe environment.