Where's the best place to sit while sailing the Passagemaker?

It has everything to do with trimming the boat. If you're alone, you need to sit as close to the center of the boat as possible; a boat that weighs only 90 pounds will trim down by the stern badly if a solo sailor sits back there. If you have two people aboard, you can sit on the aft seat under sail because the boat trims level with one person forward and one person aft. I find sitting on the bottom most comfortable in either case.