Any hunter who thinks GPS is just a gimmick knows nothing about GPS. I've used GPS of one kind or another for canoe tripping, hiking, and hunting for over 12 years now, and I would never go anywhere seriously wild without one. A spare set of batteries is prudent, and a map and compass are necessities still, but I have saved myself many, many miles of effort by using a GPS, and I have been able to set off into country I did not know at all with complete confidence I could meet my friends at agreed upon spots at will. I currently use a 60csx with the Ibycus topo maps. Great combination.
WHAT YOU SAID ALL DAY LONG!!!
Learn to use a good Mapping GPS and you will never give it up. Never depend entirely on any electronic device, however, and always have a map and compass, and the skills to use them.