i think you mean the floor if you do , then there is only a center drain . My boat does the same, so I sit nearer the left when standing still and the water goes down the drain. However it only gets about 1/2″ before getting to drain level anyway and if it is raining it just one of those things we put up with. It may be possible to put in anotherdrain but there are better people than I to say if it is a feasable project.Irv