I ran the 40's behind TX 22 boards, it seemed like it was a little to much pull on them, thats why I am going to try the 30's. The main thing to me is to get your tension right on the trip, so it trips when you want it to. If it doesn't trip and you have some people who are not familiar with them reelin them in to check they will come out of the water very fast. Other than that they work very well.