Yuk. If your pickups aren't right on the very bottom, at lowest point, it can be hard to drain water. You'll run into the school of thought that says you shouldn't have your pickups at the lowest point because you will pick up crap, but IMO, that just doesn't work with boats. Contents are always getting mixed up by motion, so you are better off having the pickup at the lowest point, at the back, so you can get every last bit out, and not have any water settle when you have it on the trailer.