Hey everyone, I am hoping someone could shed some light on whether or not this is a modified D fin, other than the hole of course. Any help would be greatly appreciated.
The photo is small, but appears to show a ‘‘Reverse’’ D fin, with a ‘‘bite’’ taken out of the back of it. Around late '65 or '66, existing D fins were being modified to increase aspect ratio, and reduce surface area. There was a style of fin used by Del Cannon during those years that appeared to be based on a reverse fin, and looked very much like the photo you have posted.
After giving it some thought, some of the guys at Surfing Heritage may have more background. Make contact with them. Or, send a PM to UncleGrumpy. That style of fin was an Orange County, South Bay thing. You didn’t see it much down San Diego way. Now, the true reverse fin, made popular by Phil Edwards (and embraced by me in 1960) was seen on a regular basis. But was still on only about 5 or 10 percent of surfboards. The reverse fin was at its best when foiled from 3/4th inch wood stock, and glassed on the board with glass only. No roving.
Here’s a lead that might prove fruitful. Jean Pierre Van Swae, AKA The Fly, got his start in building boards when he began making fins for Fred Wardy. Try contacting Surfy Surfy and see if they can help. Search for surfy surfy blog. That oughta do it.