I fish Grand Isle very regularly during the summer, and early last summer I learned to NEVER hit the beach without VuDu Shrimp in Natural, Brown or Tiger colors (to me those colors all work very well)and Matrix Shads in Shrimp Creole and Green Hornet.
I can catch trout on a very consistent basis using either of these baits 2ft under a rattling cork. For the Matrix Shad I make a double rig and use one of each color. If the bite is slow I will take the cork off and use a cast and slow steady retrieve method.
The key to either of these baits, as with all others, is finding the fish. I am 100% confident that if I can locate a school of fish I will have absolutely no problem catching them using either the VuDu shrimp or the Matrix Shad.