i bow hunt so never went very high,
also where i hunt is rolling with lots of knolls,
if i set up at the bottom of the know at 10-15' i am generally at eye level as they come over the knoll,
if i set up 10-15' at the top of the knoll, i am then looking at least 20-30' to the bottom of the knoll,
so i stick to the ground at top of knolls,