I have a H2 with the thumping module and I really like it. I have the speaker mounted on the bracket attached to the power pole brackets so it is always out of the way. It is not a fish caller by any means. It is actually a fish feeding stimulator if that makes any sense. If you are not around fish, then you are not going to just draw them in. The premise it works off of is bass/game fish are competitive feeders. If they are around and believe that other bass are feeding, then they will be inclined to want to feed also. That means they will be more inclined to strike your bait rather than just watch it go buy when they are not really in a feeding mood. How well it works, dunno. Does it make me feel better that it is there, yea kinda because I don't get to fish as often as I would like to so I want every edge I can get to make my day as productive as I can. Is it worth the money, honestly, that is entirely up to the fisherman. I like mine and don't really plan on getting rid of it. I do love the thump module though.