A friend just acquired a restored 10’ Bing board with documentation to support a sale to the original owner in July of 1965. The board has two wide channels cut on either side of the fin running about a fourth the way from the back of the board and out the tail. Original fin, logo, and number on board suggest no tinkering on the board. None of us recall Bing or anyone else doing channels on their production run boards during that era. Harold Iggy was beginning to do concaves for Webber around that time as I recall, but we have no recall of anyone doing channels.
Do any of you old-shcoolers recall any shapers doing channels with Bing in mid 60s?
Richard