I use a handheld also, but will typically throw out a bouy if I want to be sure I'm close.

It's worth the money even for the 797. I'm buying a 798 here soon. The second sd card slot sold me. That was my biggest gripe with the 797.

The gps is so-so. I'm interested to see if the 50-channel does anything at all, in terms of improvement. I know they just came out with an update, but didn't read the notes to see if it's addressed in the update.