Try turning your draw weight down to 55 if you shoot a 50-60lb bow. If not I know you could still turn it down past specs providing it's a Hoyt.
Another question I have is your style of grip. If you have a closed fist around the grip, try something different. That type of style promotes hand torgue and quick fatigue. Try letting your fingers extend straight out, but don't keep them tense, just let them hang there. Another grip is to curl your four fingers in and put the tips of them on the front side of the riser, this grip promotes no hand torque and could help in keeping the bow steady.
Please try to submit a picture so we can further assist you!
*65% or 80% let-off?*
2006 Hoyt Trykon, 29" at 58#
UltraRest Drop Away
Target - Copper John PAA Sight
Hunting - HHA Optimizer rheostat
Fuse Tec. 4" Camo Stabilizer
Medium/Black Vapor Trail Strings & Cables
Bohning Lynx 4
CX 200 w/white dip & 4" NAP Quickspins