Corb, I' ve got bad shoulders too. You need to readjust your thinking and forget about having a super flat trajectory.

In my experience, no matter how low the draw weight, the fastest possible bow is going to cause problems. To get the speed you MUST go to a hard pulling cam, one that jumps up to peak draw and makes you haul the string through that heavy draw for-freakin' -ever. And, with those hard pulling cams, the high letoff is a killer when you hit that sudden breakover into the letoff.

If you' ll go to a round wheel or mild cam bow, one that eases up to peak draw weight and then eases you down into the letoff, you won' t experience nearly as much pain and discomfort. And that is not going to be a super fast bow. But, the good news is you might be able to regain some speed because you' ll probably find out you can handle a good bit more draw weight than you can with a hard cam.

That is exactly what I' ve done. I can shoot my round wheel bow at 65% letoff with NO discomfort, whatsoever.

Injuries suck! It' s not fair, but you' ve got to play the hand that' s dealt to you.

I wish you the best of luck.