RE: hybrid carve
I had the Hybrid Carve in my demo fleet last year and at times it was popular, at others it was not.
They only sold a few of them (world wide) and I think we all can agree that it was a bit of an "ugly duckling".
Why *bd didn't continue with that step tail concept I don't know, but I think the development went into the Phantom which is a much nicer board to sail all around. Perhaps not quite as good in very light winds, but significantly better in planing mode.
The "focus" of the design was changed from the tail ( the HC) to the "transitional midsection" of the Phantom.
If you were interested in a used board, I think the last years demo board is available.
Hope this helps,