NAMSA and the Multihull Council are not mutally exclusive organizations - in fact, NAMSA is a paid-up member organization of US SAILING which makes a duly-designated representative of NAMSA a full voting member of the Multihull Council. NAMSA hasn't been represented at MHC meetings in a long while, but neither have 99% of the other voting member organizations (see
HERE).
I expect that NAMSA keeps its membership current to maintain the insurance program offered by US SAILING (as the Hobie Class does, too). There is
nothing wrong with that level of involvement - the current Council ExCom (see
HERE) are not the sort of folks that judge anyone's commitment or motives. But as you can see from the ExCom roster, there are two seats open - one of them is about to be filled by Tom Siders and one by Adam Borcherding, both of whom expressed an interest in helping out their Areas. But Brian's point here, that there are not enough volunteers to fill all the positions we would like, is valid.
Of course the MHC and NAMSA have slightly different roles, but I have avoided volunteering for NAMSA until my term with the MHC is up - it begins to look silly when one person is sitting at a table representing seven different multihull "organizations." It begs the question "how organized can they be if they've only got one guy?"
Anyway, the punchline is this - NAMSA? Sure - why not? It is as good an outlet for your energy as any other.