i use a 30 ft huntin’ hoist that i attach to the bottom platform of my lone wolf. i will climb until it has about a foot of cord left or until it pulls my bow from the ground. it all depends on the land and amount of cover available. but beware, if anything falls from this height it’s going to be in more pieces than a puzzle.
I am becoming a wimp in my older age. I used to go around 20ft with a platform stand and no harness (dumb@@@), but now I use climbers with a bar or ladder stands around 15ft. I have found that by having some military netting wrapped around on the front bar helps to keep the deer from freakin out if they see me.
It depends on how high I have to go to get some cover. This time of year I try to use all of my 30′ pull up rope when I hunt from my climber. Most of the hang on stands I have set up are between 15 and 20′, but some of them become useless after the trees loose there leaves.