I've seen a cheaper laser rangefinder at WalMart. Not sure how well it would work on the water though, it's hard to keep stable enough to stay on target at any distance when rolling about. I'd almost pick one up just for giggles, if I thought "Mee" wouldn't shoot me for wasting the $$. Then again next time Capt B goes by 92.86' from our dock I'd be able to say with authority that it was under 100'
http://www.walmart.com/catalog/produ...uct_id=1732115
(I think I've seen the "pro" version for ~ $180 in the Gilford store)
On a related note I saw in the Alton Baysider that the NHMP was going to put buoys out 150' from all public launch ramps to better educate the public as to how far 150' is. I've yet to check for them (buoys).