I have a magellan hand held. I only use it on the lake to check my speed. My grandkids uses it to play Geosearch. (
www.geosearch.com)
I use it out on the ocean to find Block Island off the coast of RI.
I take it with me when I go hiking in case I get lost, but I find the hiking trails are a bit off on the scale. I heard someone is remapping the trails.
I bring it with me when I do the intercoastal but it is so well mark, I never really had to use it. Guess I'm not much use...................