The channel bottom is such a fascinating niche board. Interest in them rises and falls but there are always a few surfers out there dedicated to the design. Our machine sander always grumbles about them but then does the most cherry job. I might have to order one for this winter.
I once went on a surf trip to Mainland Mexico with a friend who took only a 6'6" six channel gutter bottom and he just tore the heck out of the place on the thing.