btw the 4 point harnesses are designed to not cut off circulation the way the old ones that just went under your arms were accused of doing...
and don't fall in the first place! (of course I know sh*t happens) but get yourself a quality ladder stand, big platform, arm rests, shooting rail. If you don't take it down every year, loosen those straps so the tree can grow, and snug them up before each season. or just replace them every year.
An oz. of prevention is worth a lb. of cure...