The stringers are hollow from the factory. The motor stringers are made out of a hard rot resistent wood covered in epoxy, but the big long hull supports are hollow and I make sure they have plenty of drainage points so they don't fill up with water. One of the things I didn't get a photo of and should have is the front of this boat was holding around 200 gallons of water because it wasn't designed to drain correctly. They had these narrow PVC pipes glassed in everywhere, but when the "floor mud" got into the hull, it stopped up those pipes and made swimming pools up front of black rancid water. When we cut open the front part of the floor, it smelled like somebody let out a HUGE
