I own this canoe. I have 2 kneeling thwarts for calmer conditions tandem. In the center I have knee braces. I used to sit on a packed dry bag when solo. Great boat for both tandem or solo. I have vinyl airbags for tip and tail. Not so great for the pools but fantastic in the drops! I'm happy to found this site as I am going to sell. It's been so long I forgot the specs.