You do not have to pull the boat all the way to the beach. A gear driven come-along, a couple shots of haywire and a tree/log jam/big rock is all that is needed. Pull from the up stream side and take your time. If you pull too fast the boat will only be usefull to the tweakers. Getting the boat hooked up is the tough part, even if it is only 3ft deep.
I think a truck or truck winch would pull to fast and the boat would be folded up like a beach towel when finished.