The 99% let off if it works may be an alternative for some disabled folks that don' t want to shoot an xbow.
Unless you have somebody draw the bow for you and then sit there with it drawn all day long, you' ve still got to draw through peak weight to get to that letoff. High letoff does NOT assist a disabled hunter. In fact, too high a letoff will likely cause more problems, and a disabled hunter already has plenty of problems.