They are all different. Credit unions seem to be more generous. I know Westconsin Credit Union would finance up to the full book value on used boats.
As a foolish young man, I financed my first new snowmobile along with a two place aluminum trailer, salt shield, C & A Pro skis, 192 carbide studs, mid-height windshield, and a pair of leather gloves, all rolled into the snowmobile loan
didn’t seem foolish at the time, but the first summer and every summer thereafter, it did.
A boat payment comes every month all year round. Just sayin’