Post advancements; and the rules of confinement do not impede the respective sports.
Scopes, compound leverage, triple skegs and leashes, not pool. Pool is like don't do this, don't do that, nope, can't, uh uh...
That is the standard usage of standard bridge heads. Long time ago they tried to market a handheld bridging tool under Loree Jones name and it was quickly disallowed. There's a lot of brain dead in pool. Thankfully that rule is no longer used.
Yeah I know. Doesn't excuse the dum rule. Have you tried it? Those narrow slots could bind, The small ones on the moose will if you aren't perpendicular.
e. You may not shoot while using any item to support or elevate your bridge hand.
VNEA specifically says Devices Are Not Allowed For Jump Shots.
Skwoo dem whoever they are.
I'd use anything that would get sufficient bridge elevation. I've used magic markers - awkward but they'll do...
I think the rule is bogus. I would use them if they worked. The tight V opening might bind if the stick angle is too close to level.
Legal? Ask the officials per event.