Over at Sway's there is a thread discussion the restoration of an old surfboard. It's a "Phil". This ad, circe 1964 has a blurb about an Inland Wake Board for $87.50.
I had to research the model in that ad. When I was a kid I watched the Beverly Hillbillies in B&W - Ms. Hart had a cameo role in the series, I found this picture of her as Miss Commerce Bank with Mr. Drysdale. THAT brings back memories.