"boat" = a hole in the water into which you pour money
Exactly. I bought a boat when I was stationed in Hawaii and this is exactly what my uncle told me. I ended up flipping it before I got out and luckily broke even.
Everyone keeps talking about maintenance costs, parking fees, etc, but aren't these the costs of just owning a recreational boat period? I have no problems splitting gas, prepping the boat, and cleaning the boat afterwards, but I don't calculate my insurance, tires, oil, brakes, car payment, etc when I give someone a ride in my truck. These are costs of just owning the boat, sorry those are the boat owners, but I am more than willing to pitch in for the immediate costs of the day, ie fuel, drinks, food.
When I go diving and invite others to carpool with me, I'm not expecting anything from them. My F150 gets 13 mpg and we drive quite a distance to dive at times. I appreciate my dive buddies trying to buy lunch, but I try my best to decline the offer. I figure I'd be driving anyways and it's more enjoyable to have the company. I guess as a boat owner you could always go out on your own, but I doubt it would be as enjoyable. Recreationally speaking, maintenance costs are the boat owners, if you can't handle that, then don't buy a boat.
It's really simple, if someone doesn't appreciate the fact that you do pay to maintain, store, and operate the boat by either volunteering their time or pitching in for gas (or both) then don't invite them again. I don't own a boat now because I'm not prepared to pay these costs and if I did own a boat again, I would never require a voluntary payment for oil, parking, insurance, etc, and I would only hope to get some gas money.