This sounds like a common post spawn pattern where you are still catching the smaller males that are still shallow. I concur with the above poster, maybe move out to the nearest point, drop, ledge, structure etc. to see if some of the females are around. I have also found that senkos to me, produce an inordinate amount of "dinks". They are fun, but if I fish in a tournament I rarely fish them unless nothing else is working. Thats just my perspective, especially if you are fising those quick evening/night tournaments.