In all the talk of graphical downgrades no one seems much preoccupied with 'why?'. Why build something and then proceed to tear it down, piece by piece, in the hope that ever more diminished expectations about the final product won't be severe enough to...
Don't waste your shots, for they'll push the gems closer to the hole and you don't want that.
If you can make a shot and grab a power-up, that's a much better course of action.
Think carefully before you equip the boost for your gem shooter.