Why would anyone let the boat go to repo if there was any other way?
Selling the boat at a significant loss would be a much better option. Some folks think that when you give the keys back to the bank, your liability is over. Big mistake. The bank will sell the boat for whatever it can get for it and come back to you looking for difference between sold price and note balance.
Lets say you bought a Shiney New Carver for $360k in 2003. Because finance money was plentiful, you put zero down and made your payments for 4 years. The note is now down to $300k. Business goes bad and you have to sell. You ask $335 but highest offer was $250k. You say heck with it, I'll just give it to the bank. Bank repos and sells for $200k. Guess who's still on the hook for the $100k plus cost of getting the boat sold? That would be you and now you're really hosed unless you can somehow come up with $100k+.
If you HAVE to get out, the better option would be to sell at market price, Borrow if needed to pay off the note (bank may work with you on that) and next time buy an older well maintained Hatteras as opposed to a shiney new Carver.