I've shot some of the old school ASL bows and have noticed the hand shock as it's so called. One improvement that has been made over the years was to use tapered laminations in the limbs, making the tips have lower mass and reducing the hand shock. Additionally the more modern string materials, are lower in weight, and require fewer strands, and vibrate less, that takes away more hand shock. By design, how those thick limbs emerge off of that riser with the flat back, it's going to have more hand shock than a D/R bow or a recurve. There's not much to eliminated it all and make them shoot as comfortable as other bow designs, but there are things that can help; Using a low mass string, using the minimum amount of center serving, using a light tie-on nock point like silk thread,and not the metallic ones, optimum nock fit, just enough to hold the weight of the arrow on the string, and as Rob mentioned holding the bow properly and not in a strangle hold. Of all the designs I've made, the bows I made for my own personal use, and won't part with, are all string follow ASL designs. But if you get one, and shoot it, and can't stand the hand shock, change a few things, start with the string, and go from there.