We have been using the 50/50 vinegar and water mix on the same boat since new in 1995 with excellent results. We wipe down the sides of the boat after each trip while tying down and covering for the drive home from the water. I try to wax the boat once or maybe twice a year. It is best to keep the boat inside, but at least covering it will help protect it from the elements. An added benefit is the vinegar mix works well for windows and metal fittings and rails.
I use to detail boats as a young lad and I really don’t think putting vinegar water mix would be to good on your paint or stickers unless you still wax it after. Me I just high speed buff mine every few trips and the water never spots up On it. But I do wAsh it and out a spray and wipe wax on it after every triP. I may be a little obsessive compulsive though