We ALL own our boats. At least all of us who have the boat's title/registration in our names own them. Doesn't matter if you used your own money, or used someone elses to purchase, that's a seperate transaction. Even if you financed 100% of the purchase price YOU still own the boat. Don't believe me? Next time the boat needs service, gas, or you need to pay insurance, licenses, slip rent, or whatever, who pays? YOU DO. Why? Cause it's your boat- you own it. The finance company doesn't. Ask them to pay for all the stuff I just listed. The only way they can own the boat is to reposess it.
Also, there is absolutely nothing wrong with financing things like toys. As long as you can afford the payments.
That said, I don't owe for any loans that are secured by my boat.