99 times out of 100 I usually look to setup on the flattest level spot anyway. Even when on sloping ground if you spend a bit of time you can find a sweet spot. I just don't see it as necessary to build an adjusting frame which lifts the scope higher off the ground to get level for that occasional time when a couple of 2" square pieces of different thickness strategically placed ply will achieve the same result. KISS principle. But if a frame makes OP happy then go for it
