I honestly think you're making an issue out of something that has been a non-issue for anyone I know (and in my business I know a LOT of boaters, literally thousands). Not one of the Kent County boats has a radar gun. Those guys are in my store all the time and I know most of them well.
Radar guns don't work well if a boat is rocking up and down and moving with the waves. Unreliable at best. They need to be fairly stationary to work well on the water. In fact, they will often read the wave tops. Now laser... that's a different story.
I wouldn't put it past the LEO's on Hardy Pond to have a radar gun though since that seems to be a place where guys like to bring their go-fast boats. Plus, I do not know a single bass fisherman who has ever even been approached by a LEO about speed. On a lake like Wabasis that has a 35 mph speed limit at all times it's pretty easy to tell if someone is speeding, and Kent County patrols it on a daily basis. But I do not believe they have every actually issued a speeding ticket out there, at least none of the officers have ever told me about writing one.