Lyle''s Fatty Knees Design

Aloha to you Kate and the group; While on the subject of Lyle, does
anyone know what influenced him to design the Fatty Knees Dinghy.
Seems that I read a magazine article some long time ago, that said,
Lyle was in Morro Bay, California, when the idea came to him. Is
anyone out there that could shead some more light on this ?