I like slip-on pads, having what my gunsmith calls "ape-hanger" arms, but not liking to modify original stocks (for several reasons, some not having to do with conservation and purism....more with plain cheapness). The velcro attached are best so you can pull them off after hunting and get the weed seeds, bugs, and moisture (what we call sweat in CA) out. If you hunt with the kind of low-lifes I do, you will have to endure slurs about "butt condoms" and such. Ignore them; they know not.