Clarification: "The only way the Kona could be the biggest selling model is that they haven't changed the model year on year for 3 years now, and there is really only one model of board. by that criteria, the WOD and the IMCO are probably bigger sellers than the Kona."
The claim was of course ANNUALLY.
I believe it is pretty much impossible today to reach the sales figures of yesteryear, and thus become the best selling board ever. The market back then was some 400% bigger!
But the sales numbers are irrelevant when it comes to picking the next Olympic board...