There is really very little difference to using UTM and lat/long on maps. Both systems give you a n/s and e/w reference. The main reason for the popularity of UTM is that many topo maps are coming with the UTM grid preprinted on the map. Some topo maps had the lat/long grid preprinted, but the grid was 2.5min x 2.5min. This is also what is marked in the margins of the maps. This is TOO big to accurately locate your position.
If the grid was printed at 1min x 1min, then you would have a very similar grid to the UTM. I agree that the lat/long grid would be larger and rectangular whereas the UTM is smaller and square, but it would provide a very similar feature as far as position location is concerned. You would then set your gps to DD MM.MMM (not DD MM SS or DD.DDDD).
If either grid were to be printed even finer (e.g. 100m x 100m or 0.1min x 0.1min) you would get a grid that would be even easier in position location, but the map would start to get too cluttered.
Another advantage to the UTM is that you can get a square clear plastic ruler with the UTM measurements that match the USGS maps and use it to interpolate your position. However, if you are using a computer printout map, then the scale most likely does not match.
If you have a computer map program (such as Topo!), try printing a map with a grid of 1min x 1min, set your gps to DD MM.MMM and give it a try. The DD MM. portion tells you which rectangle you're in, and the .MMM portion tells you where you are in the rectangle - very similar to UTM. What you eventually end up using is all a matter of personal preference.
I tend to NOT use the gps number output. I will set up waypoints for a hike on the computer before I go out. I then use the map screen on the gps to show me my position relative to the waypoints. I then try to pinpoint my position by the surrounding terrain on the paper map. This works for me and it worked last Sunday in finding a GPS Stash ; -) (I think you hid the additional bottle too well).
Bob
does anyone else use utm for their position format with their gps. i use a garmin 12xl for my hikes and carry paper maps. i can find my position very accurately on a map with utm.