I used a harness for a while, but I hunt mostly in a river bottom and the ground is always really moist. Whenever a strong wind kicks up there are always some good healthy trees getting blown over. The first year I hunted with a harness on I witnessed a 50 or 60 year old oak get blown over less than 40yards from the oak I was in. All I could picture was me going down strapped to that tree, and not being able to jump away and the tree falling on me. I like the freedom.