Hello Trey,
Professional field tripods and heads for video feature a ball-leveling mechanism that enables you to quickly level the head on uneven ground.
Your 3021 legs feature a center column instead of a bowl into which such a mechanism would normally be. Also, I think that the 501 head is not designed as a ball-leveling head.
But Manfrotto does make an accessory ball-leveler that fits between a tripod's center column and a flat-footed head. It might be just what you're looking for. See the
Manfrotto page on this product.
Hey, how is the golf swing analysis going?