I use one of these...
Its a gorilla self climbing. I hunt on public lands and these guys don't leave a mark at all. (well... maybe a little... but no holes.)
I bought it a coupla years ago at wal mart... if memory serves, I think I paid something in the area of 150.00. It came complete with a safety harness as well. It prolly weighs about 30 pounds, so its not too light, but it has backpack straps and I take a sled in with me. If I am fortunate, I can drag the game and stand out on a sled.
Hope that helps!