Roscoe, I gotta admit I'm tempted to get one just to reduce the number of hits my rotor cuff and retinas will take in the course of my life, and for bench shooting they may well be a good idea for a lot of folks; HOWEVER, ....

There is a crucial area of practice that CANNOT be done with the aid of a LeadSled and that is hunting situation practice: prone (watch out), kneeling, on-butt over knees, leaning off of trees, sticks, pack, etc. This is practice so one will definitely be cognizant of recoil and blast. One can generally adapt the principles of the 10 items I mentioned to this critical realm of practice but one cannot effectively adapt a LeadSled. IMHO, one cannot effectively practice for hunting scenarios or really "learn how to shoot" by staying on abench.