I only feed live food to my stonefish. It eats live earthworms and I'm sure it eats some of the ghost shrimp in there, but getting it to eat anything that doesn't move is difficult. I know live feeder fish aren't the best for it, but its better than him not eatting at all.
I do believe I will be getting a G. Tile if I can find one and rearange my tank a bit.