First Concaves Ever?

Chuck Barfoot with first Concave skateboards
Chuck Barfoot holding what may be the very first concave decks.

These might possibly be the very first concave decks that were ever produced, that we are aware of. Sometime in 1980, BARFOOT began to make convex boards to avoid the need for wheel-wells and to keep the tails from breaking with the advent of the street ollie. The side effect of having a convex bottom proved to be a concave top, which obviously provided better foot grip. But the main reason was to skip the wheel-wells and make a stronger deck!!

Anyone care to corroborate? We are searching the period in Action Now Magazine, and will continue to unearth this interesting piece of skate trivia.