I found another lure that works almost as well as the GotCha for blues.
I don't know what the name is, but it is a silver coffin-shaped jig and comes in single- and treble hook models. I think it is used as the weight/bottom jig on a spansh gold-hook rig. Anyway, the blues will hit it well during the summer, just retrieve it by short jerks just like a gotcha except a little slower. Spanish will also sometimes strike it.
Will someone else who thinks they know what I'm talking about please post a better description?