If you are fishing a pond that has grass shrimp in it, scuds are simply deadly on every fish that swims in that pond. To have the grass shrimp, the pond must have some shallow weeds, like pondweed, to provide a home for the shrimp. I've not only caught BG, but LMB and even hybrid striped bass (HSB) on #12 scuds where grass shrimp are present. HSB prefer deep open water, but I think they may like grass shrimp better.