Anything they do now will not have material impact on the support, not in the short term, and would be wasted money advertising.
What needs to happen is to improve the product on the park. Then, you invest heavily in engaging schools and get the next generation of fans on board.
I was hearing from a school teacher based in a Cumnock school that cannot get enough bodies together for a school football team. Why? Well, Glasgow Warriors run weekly rugby sessions at the school, at least one player attends every week and all the kids want to play rugby.
I know this is the case in schools across West Scotland. My mates boy has a selfie with just about every Glasgow Warriors player...and rugby has stolen a march on football.
On a side issue, I believe Rugby becoming professional is why Scotland can’t produce any decent centre half’s.