Sorry for the slow reply to all of your good advice and answering my question - very busy couple of weeks.
At this point I think I will join a sailing club, very near where I work, that offers sailboarding. They don't have anything to advance for boards but it's a start to see how things go. As most of you have said there's a difference so, as there's no rush, might as well be smart about it.
Also the club is on the way home so easy to stop in for some post work fun.
Thanks again for all your advice!
Good sailing (and boarding) everyone.