Check out the style in this video: http://gremmieskateboards.wordpress.com/2010/09/29/cadillac-kid-greg-weaver/
gregg weaver was born in 1961, he looks 15 or so which would make this around mid 1970's. still cool video, I like the long board
already seen on the barefoot forums, but for those who missed it, here is Skaterdater: http://video.google.com/videoplay?docid=-3273044523822545532 https://en.wikipedia.org/wiki/Skaterdater there it is on youtube too and in higher quality but it seems that the audiotrack is muted... try watching the better one while listening the track of the other and good luck with your multicore processors and hand speed... LOL https://www.youtube.com/watch?v=lRIt3aDX7-k