RE: What trade off in let off?
Short-range,
Welcome to the old-bow club (it currently has 2 members, you and me) My bow is from around 1980, and is a PSE Laser, 35% let-off, 2 round wheels rather than any eccentrics. It is smooth, fairly quiet when I keep it tightened, waxed and lubed, and I get good groups but keep my shots within 23 yards. But holding it is a bear. I can HOLD it for 20 seconds easy, but holding it for 20 seconds and being able to get off a relaxed good shot is another story. I held my bow the other night to check and see when I thought my form and concentration started to wane. About 10-11 seconds and I was sure that I would be hurting my shot and chancing wounding rather than killing a deer. Mentally, I went over my typical shots from draw to release, and I' m pretty sure I usually release within 5-6 seconds of coming to full draw. Course, with the bow at around 67# and with a 35% let-off I' m trying to hold 44 pounds.....WITH FINGERS.
I' m looking forward to a new bow....it' ll have to wait for a little while though.