RE: wearing a harness
yes i think it would . they are over rated to be on the safe side for law suits. it would probably hold 3 times the rating before failure but i'm sure you are well over there claim
to be liable . as far as the being able to stand you could use a system like i have that came with my summit that has an adjustable knot to lengthen or shorten the tether line.
it works great for me