OK, I admit it. I screwed up when I bought my HB 796HD DI. I should have spent the extra $100 and got the one with the GPS built in, but Cabellas didn't have that one in stock that day and the money was burning a hole in my pocket. So now I need to buy a separate GPS to install on my boat (most likely handheld). Any suggestions out there that's not going to cost my my left n*t? I want one that I can get lake maps on, mark the different way points, etc. I've got a garmin for the car that I am using know, but I can't mark any way points on it.