While I am working in my bilge and replacing everything down there, I decided to order a Flow-Rite remote drain plug. Tired of getting under the boat to put a plug in and after forgetting to put it in once and not finding out until I was far from the dock in a stump field, I figured that this would offer a little safety. It says that it requires a 1" drain in the boat. Does anyone know whether the transom drain tubes are 1" ID or OD? If anyone else has one and has any comments about them I'd like to hear them.