I can't even get cell signal standing on my roof on one toe with a golf club taped to my head...
Make sure you're using a 3-iron...not your graphite-driver.
I have a Garmin E-trex that has work great for hiking/hunting. You'll need to buy the specific region-map-download you're hunting in and it should have all the trail-details you'll need. Been using it for the last 3 hunting seasons and wouldn't leave home without it (or I may not find home again).
The latest F&S magazine rated the Delorme PN-60 as a great buy and easy to use also.