Hate to be picky but shouldn't your club logo have a bike with a headlight on it?
Creating a good interesting course will win people over, VERi has a few MX riders come over but we have also pulled in a lot of the more casual trail riders out of the woodwork.
A lot of them aren't into racing and don't want the drama's that go with it.
Our events, while all different have a bit of an adventure atmosphere to them, we have made use of classic Rego to have some events in State Forests making longer events with loops around 50+K's
The longer the loop the less congested it becomes when you have lots of riders.
Chicken/rooster sections work well too, the good riders get a challenge and the less experienced can bypass the difficult sections keeping them happy.
Good luck with it.