I recently came across the swimming senko from Yamamoto. Very novel concept. The front half is a senko, and the back is a swimbait tail. It has a nice little wobble as it sinks on a slack line, and a nice thump to the tail when you reel it in. Very effective bait, as i caught a bunch of good fish with both presentations. I had it rigged weightless. The problem is, it has to be rigged exactly straight on the seams in order for it to stay upright on the retrieve. Otherwise, it just spins. I didn't really catch on to that till the 2nd day i fished it, it had my line all twisted up. The thing still got bit plenty even when it was spinning constantly strangely enough. I tried using a keel weighted swimbait hook with it, but then it's pretty much just a swimbait. I've also had a similar conundrum with the powerbait thumpworm, which was pretty productive as well. But line twist is a pain... Any thoughts? thanks b.