I don't use a safety harnass when putting up a 15' ladderstand, I don't really know how you would. I do have my wife steady the ladder while I am hooking the ratchet strap around the tree.When installing climbing sticks and a hangon though, I use a summit seatopants vest with a summit linesmans rope with a prussic knot so that I can work hands free for attaching the lone wolf sticks and the lone wolf hangon. Makes the job way easier and faster,not to mention way safer.