I'm 5' 11" and I hang it at eye height or a bit lower, probably more like neck height. I generally target about 30 degrees but a bit more isn't bad. I find the RR very forgiving of your hang angle. I did hang it closer to 20 something degrees when I first got it before I dialed it in and it was rather tippy when it was that flat (and probably too much stress on the line). Also, for me I set it up flat and don't raise the foot end. I don't slide down at all. It just works for me.
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