I personally believe even just trying is doing your part.
I know all too well how hard it is to convince people to collect things.
But the important part is just exposing people to the hobby and the club.
We should all talk to as many people as we can.
I have seen some great ideas here on the boards.
Leaving magazines in waiting rooms, mentioning the club in EBay sales ads and on websites.
Doing whatever we can think about to personally open peoples eyes to the fact that we even exist.