I would go with whatever interest rate is cheaper. And if you take out a loan with the boat as collateral, you might have to insure it. On another subject, which model is it? I work at a Seadoo dealership. Make sure it's been properly maintained as I'm assuming it's a two stroke. If you don't winterize them, you get low compression and possibly lead to a blown motor. Let me know if I can answer any questions you have about it.