I like to be 25 feet up. It all depends on your available cover. I have been ae low as 10 foot, due to the cover that was around me. I prefer to have the added visability of 15 plus feet. I also wear a safety harness regardless of how high I am. A fall from two feet can be fatal if you land wrong. One thing I always have in my back pack is climbing steps, in case of a fall I can get to my screw in stepsand hopefully get down or at least pressure off my legs.