Thanks for the feedback Ed. I am following the philosophy that if users are interested in a particular model I add a new board - so I have restored Boat Category P424.
But I still hesitate to duplicate any existing Pearson forums already on the web - I think that each website requires a bit of analysis to determine whether there is already an adequate forum on the web that meets users needs. Since the pearson424.org has a long-standing forum already available I added a post for a link to that site and made it sticky.