Tru-shot,
I shoot a Tru-ball Short-n-sweet release off a string loop. The release hangs off a rope to the wrist strap and I did shorten that rope by about 3/8. That seemed to work fine, my draw is only 28" . My only concern is keeping the same bend in my arm. Sometimes it feels like I' ve got more, sometimes less but it doesnt seem to affect the impact point all that much. I have noticed my aim gets steadier the more I bend my arm, up to a point.

I really cannot believe I' ve been shooting for this long, have tried this many gadgets, sights (V-pin, scope, horizontal pin), releases, paper tuning, bare shaft tuning, no-peep, peep, stabilizer front & back, both eyes open etc. and just bending my arm for free helped more than all of them. Like my unlce keeps telling me, " You' ll make a smart OLD man."