I thought the grubs were a little secret I had, guess not. I fish them real slow, rod tip up with the occasional twitch and drop . I am going to try some of the bigger ones of the beach when some bigger fish move in.
This year I have been using a 1/2 owner jig head with a grey with black fleck 4" grub, I forget who makes them I will find out for ya. I fish them slooowww, in current and a little faster on the open beach. In the river I let the current move the tail and keep the line just tight enough to keep it off the bottom. The key is to fit the right size grub with the right size jighead so that it doesn't sink like a rock. Its simple but definetly effective for the schoolies. I don't see why it wouldn't work for bigger fish either.
I also use them on a heavy jig such as the canal special when I don't want the jig to sink too fast. Used in place of pork rind! Sometimes I use it in the surf behind a crippled herring. Blues love em