I was aiming for a subsurface darter type of stick but I think it's shape is the limiting factor here having said that it only needs 3 grams in the front of the lure to sink level. You are right the only way to know what it will do is to take It for a swim. There are so many factors to consider for Example orientation of the line tie, weight vs buoyancy, body shape, center of gravity etc etc combinations are endless. So tuning a lure is daunting to say the least so any input from chaps that have done this thing before should at least give me an idea of what to look for while testing because I don't often fish sticks.