I prefer my buzzbaits with .040 wire frames, center balanced aluminum blades, in black or white.
I like them to be able to pull smoothly and to be able to slow them down.
The plopping sound and squeaking are deadly. Flat bottom and top, doesnt need a keel and i hate round spinnerbait heads.
You should stick with 3/8oz to start. The speed is the key, probably need a trailer on a 1/2 to slow it down enough to not miss half the fish.