You can also look at NADA boat values as a starting point. Most dealers don't know anything about Toyota boats, so if you are looking at trading it in, they will probably give you a very low value for trade. Post it here and try onlyinboards.com and you should be able to get good money for your boat. We obviously don't know what you paid or what you owe, but you should be able to get a good idea if you post your boats specifics and post a couple pictures. Your location may also help as well.
Good Luck