Ever hear of Lake Erie, how about the Delaware River, not to mention PA boat owners who keep their boats several hours away in other states. Unfortunately, for Santorum, his crazy bill got a lot of press throughout the country and the attention of a somewhat cliqueish group.
Come to think of it, there is a lot of water around here. Numerous boaters drown in it every summer--most of them drunk.
I didn't really read your post carefully--I thought you were talking about seagoing craft...yachts, etc.
We do have a lot of canoes on the cricks and pontoon boats on the Susquehanna.
A friend of mine operates a mini-sized model of the African Queen on our stretch of the river.
But enough boaters to defeat Santorum in a general election?
Never.