Sure that's JC? If you are talking about the guy doing the backside bottom turn going right that might be Dick Pollack. I use to surf at the Inlet regularly mid 70's to mid 90's. JC use to switch foot a lot back then and one of the first times I surfed with him at 1st peak I accidentally dropped in on him. That was probably in 75'. He was riding Dunhams (I'm sure that's incorrect spelling). In the 70's video I see Jacky Grayson(he rode Ocean Avenues probably shaped by Greg Loehr), Gary Paul(he was riding Rainbows shaped by Doug Wright) and Kevin Ogden from Daytona. Jacky surfed really good which is obvious in the video, he had a solid smooth cutback in the video. The other video with Slater also had Bill Hartley on the first 2 or 3 rides.