The shimmy shad has a very unique action, the tail swings from side to side and the whole body ‘shimmies’ there is zero roll from the shad and this was designed into the bait on purpose. Sometimes Pike can get wary of soltbaits with a pronounced body roll. Deadly in both sizes, I think the ‘shimmy’ shad is best used as a straight retrieve lure rather a jigging style shad. 

Action videos below, in both videos the shads are rigged weightless, the 12cm with 1 treble and the 16cm with 2