Depending on the size, many just trailer them for convenience. They make really small, lightweight trailers for them. Most of them have multi cell construction so even though it would be REALLY hard to puncture the tubes with a fishhook, doing so wouldn't guarantee a sinking.

They may be a bit more bouncy if you go fast, and some have fiberglass V shell bottoms, others have just a thin rubber bottom with articulating wood floor boards.