Joined: Dec 2004
Posts: 12,537
Likes: 791
From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Catrike Speed
With rotator cuff problems, the motion may be more significant than the weight. The pulley system suggestion is a good one. But then again, so is N+1.