Well, in my opinion, it would just seem to me that sighting a hand held, radar, speed detector on a speeding 32' fiberglass hull from a distance of one quarter mile would be about as difficult as hitting a large barn with a snowball from thirty feet. The surface and angular design of a fiberglass boat should easily be detected as it moves across the lake. It's about as non-stealthy as a moving object can be, plus there's the noise, wake, bright colors, lights, and rooster tail of water.
Add to this the speeder's 'fear factor' for getting dunned through their next three year's car insurance bill, no matter which state you call home.
......sorry....but that's the way I see it.