Try this Hill Bear...........
If you are using bait like shrimp, squid, snails, limpets, canned corn or peas, etc. on drop looped hooks with a weight on the bottom, it's almost always the weight that gets hung up on the rocks, not the fish. Try using a "sacrificial" weight like old lug nuts, bolts or whatever it takes to sling the bait out to the fish zone. Use a length of lightweight mono from the weight to the end of your drop loop. As soon as you get some action and you think that you are "rocked" just give your rig a swift stroke and the weight will break off and then it's just you and the fish. Another trick that Trigger's really don't like is to do some "strummin" on your line. As soon as you think the Trigger has locked himself under a rock, pull your rod up tight and strum on your line a few times then drop the rod and let all of the tension off. I think that the Trigger thinks that the line has snapped and then he comes out of his hidey-hole a free fish. The instant you feel any action, yank the little shit off the bottom and reel him in like crazy. I usually strum them the theme from "JAWS" and I think it really scares the crap out of them! Especially since Triggers are the favorite food of Reef Sharks.
As for using floating bobbers, they do work depending on the conditions. I used bobbers to haul in shit loads of tasty little surf perch off of the wave swept rocks at Laguna Beach back in the 60's and yes, I was a kid then.
JJ