Hunting cabin is always a good option.
Or try to trade it when buying next one. Good friend had a small TT also with significant water damage, his damage all across the front. RV repair shop said at least $2,500 (and probably more) to repair. And they estimated the value of the trailer at $1,500 unrepaired and $4,000 repaired. So not a good investment.
He began looking for something else to buy. Found another slightly larger TT he liked. During negotiations, dealer offer him $2,500 trade in, sight unseen, even though he had described the water damage to the dealer. That is not to say the dealer did not have that extra money built in to his price, but that did save him a little on sales tax, and was an easy way to get rid of it.