I agree with Private Pilot - Skitterwalk in shallow water is a great bait (Black & Gold). Any of the Gulps! work, which is best depends on factors like water depth, clarity, etc.
I've known a lot of guys (& guides) that pitch small crabs or small parts of crabs to likely spots.
I chase shallow reds more than anything else anymore; I always start with the skitterwalk and have a Gulp! rigged and ready, too. If this doesn't work I'll consider non-artifical bait.