How Come i can't catch fish on a senko but i can catch them on a finesse worm?

The Senko worm requires more finessing then a finesse worm does.If the correct action and twitches are not imparted with the senko, it will be like dragging a pencil through the water. On the other hand, the finesse worm will almost turn any movement or twitch you impart to it into a realistic looking fish tantalizing movement.. But there are days the fish prefer the finesse worm over the Senko. But I fish both and the Senko type worm will generally catch fish faster then the finesse worm, and be much easier to cast. But like I said there are days the finesse worm will out fish the Senko. Let the b decide which you should fish with.