Sandfleas and Shrimp are what i use for pomps. There's no need to use a whole live shrimp. I usually brine mine and use finger nail sized pieces for the pomps. If they're in the surf, they'll find it. You might have to beat off a few whiting and cats to get to them, but just keep re-baiting and tossing.
Switching to a Pompano jig will eliminate some of the trash fish as well. However, it takes more work and sometimes negates the numbers of pompano you'll catch by quite a bit.