Thanks for the response, The Weed Burner is apparently still available in Tuttle at Windsurfing Direct, I wonder if it's been discontinued...
So the 12.5 Blade Weed would not be too small for this board? I found the 14.5 worked ok, but can't help wondering if a smaller fin would be any better and faster. I just don't want to waste 150 bucks if I don't have to. The new board blew the budjet for a while