Hillhopper,
I was like you until this year. I drug my feet on getting a GPS, and now after having purchased one, I'll never go into the woods without it. The reason I bought it was because I got access to some property that I have never been able to hunt before. This patch of woods was huuuge, we're talking 100's if not into the 1000's of acres. I didn't want to worry about not finding my way back to the truck. My little GPS did the trick. I was also able to do like you suggested and mark spots I wanted to visit in the future. Marking the patches I planted was just another thing I tried doing with the unit.