Rotator cuffs. Long exaggerated draws. Expanding everything to the hilt, and then all of a sudden, a release. With every action there is an equal and opposite reaction. What about us "short draw" hunters. No, not small framed people, but people who bend that bow arm, and only draw as far back as too get the middle finger to the corner of the mouth? Not much twisting of the joints as we go through the motions of the draw, shorter, yup, but a WHOLE lot more STABLE. Don't think so. Take a, full, gallon of milk and hold it out with your arm extended all the way out, then try it with a good bend in the arm, which position did you LAST the longest?
Overhead, "military press" will keep your rotator cuffs much less injury prone. Don't strain that lift, it is an exercise of 10 reps NOT TO FAILURE but till you feel to uncomfortable to do another, or when you have to sacrifice form to get it up.
60#, only shooting every other day.