Everyone may know of this, but I bought a pack of cheapo Redheads strikers and one of them was advertised to work on wet pot calls. I tried it out on Sunday when the woods were drizzling and my call got soaked. It worked as if I had just sanded the surface. Pretty cool and cheap. Sounded fine too.
I've got a couple of them, they sound and work pretty good for cheap strikers. Redhead actually makes some pretty good sounding box calls.