Fellas, this should technically be in some other topic. However, I thought it would be super beneficial to post it in the [TN Trout Streams & Tailwaters].
I think this device would be a great tool to map out fishing adventures both on water and land. You can go on to your Google Earth and add notations and pictures. There are several different devices on theirs site.
I just thought this one is very cool that it interfaces with GoogleEarth, plus it is fairly affordable at around $150.