Yep, the design looks like an old Force too, though it looks a lot like the Sevylor. I have seen an Avon "duckie" (larger, more Hyside-ish) style, but never an IK like this. I wonder how many they made and if they sold the design to one of the other manufacturers.
These flat, diminished boats do surf small waves well, but leave something to be desired in bigger water. Sotar, Aire, Thrillseeker, et al. have increased the kick for a reason. Still, it's an Avon and it's unique, so I'd buy one in a second if it ever popped up.