Senkos have one of my main baits over the past decade. I'm a tournament guy too. I'll have to say those conditions you are describing don't set up well for good senko days. I would concentrate on lures that give off vibration like spinnerbait, chatterbait, crankbait, even the thumping tail of a Keitech. I've watched some FLW events on the Potomac and the fish seem to like the chatterbait well over there. For a more subtle presentation keep in mind a grub on a jighead.