Does your state really not allow disabled persons to use Xbow during archery season?
For example, KS only allows 'general public' to use Xbow during rifle seasons, but disabled archers are able to use them (assuming their disability affects their ability to draw a bow) throughout the archery season as well. When I broke my shoulder blade and damaged my AC joint in 2004, I applied for a temporary disability placard that allowed me to get through that season with an Xbow.
If your state DOES NOT allow such concession for disabled hunters, then frankly, I'd get pretty motivated to change that.