Rosco does the same as me i think, cut the worm into 4 pieces, i thread mine on the hook, making sure the tip of the hook is clear a bit so you get a better hookup rate
i dont use my gps, might have to start using it again so when i get a good feed, i can return to the same spot next time
last time i bagged out i used crab pots in the water to get marks from where the fish were, last tues, i only got 24 as didnt get back onto the right spot, no pots out, though having said that the fish do move around