I'd bet if you did it on numbers yes. But I bet if you did it on cost of the boat it'd be the opposite.
Discussion
I think democrat boat owners tend to have sucky boats
Yachts aren't sucky
Oops, I think I misinterpreted you
Do you mean, republican boats tend skew crappy and democrat boats skew nice?
I suppose that sounds plausible
Democrats who can't afford a nice boat likely won't buy a crappy one either
But republicans might buy a crappy boat for business purposes (e.g. an independent fisherman), so all the crappy boats end up republican owned and the yachts are divided between rich republicans and rich democrats
But the crappy boats drag down the republican skew and make it so that the "average" republican boat costs less than the "average" democrat boat