I have completed a few prototype swimmers. The largest is 8" turned from a cedar ballister has 2 belly weights and a Danny 2 lip. It floats at rest, wobbles when retrieved, and dives deep on a fast retrieve. The others have similar action except on a fast retrieve they run at surface level and roll sometimes breaking the surface. I'm undecided if they need further tuning or should just be used for slow retrieve. Any suggestions, I know some of you guys have made a million of these.
