[rafterman]

Drop stitch - less likely to delaminate over time, will often hold more psi, probably cheaper/easier to produce, IMO better for a paddle boat as the flat floor will spin/slide across the water more easily, probably better for a fisherman to walk on

I beam - tracks better in current, a lot of people like them better for rowing because they may not have to work as hard, but it seems like drop stitch has I beams beat in every other category