I spoke to a boat trailer manufacturer whose boat trailers came standard with electric brakes or surge, your choice.....I asked him about the dunking issue......he said "what do you think about the millions of trailers with elect brakes that run around in the pouring rain for years with no probs? just service them regularily like you do any trailer and you'll be fine".......OK.......sounds reasonable......he's assuming I'll be in fresh water however.

It's all in the foot. You just keep tapping the brakes and releasing them and tapping them but you've got to keep the momentum heading back up the ramp by tapping. Don't stop until the last time and that should flick the boat off. Make sure that it is completely unstrapped and unchained before you start down the ramp.
Requires very good timing.

:Please video and post the youtube link............. I love to see guys that think those weight stickers are only for highways........

Good tip.

I've draged a suburban down a wet ramp with a 24 cabin cruiser.

If it was a 38 beaker I might try it