I really question your plate setting and prop shaft angle. To have bad happen so fast reminds me of my first ride and the cure was plate setting, it was too far down from the get go! Pedaling it only made it worse! I will PM you with some tips that worked for me. Trailer bunk bulges are a very real problem, one expert told me a WOOD boat holds it shape better! OUch.....Ever hear of Fred Wickens?
and furthermore, my boat donna Porpius Jimmie, it SHARKS!
I have a problem with getting the boat to set as well. right now the motor is out and I was wondering about maybe a rough idea on how much it would cost to have your bottom blue printed ? and I also noticed that my bunk caps do not even support the boat in the middle ? if I take it off the trailer to get it blue printed shuld I adjust the bunk caps as well ( like brackets to support it better) ?
Trailer Bunks should be directly under the stringers if you have two. Some nice trailers have four to help distribute the load and minimize trailer caused damage. But what do I know Lou?