Apologies for the poor quality photo of this fast two person skiff, which I'm pretty sure had sliding seats and well as outriggers.
I've been pondering building a similar fast and lightweight skiff as an alternative to Gato Negro. I really like Ken Basset designed Firefly and closer to home Paul Fisher has a nice two seat Thames skiff which might be the boat above.
I've got the plans for Dave Gentry's Ruth which is a lovely looking boat built very lightweight using skin on frame construction which is very interesting.