Getting individualists involved In my early ringing days in the 1960s & 70s, we were blessed with two territorial associations whose boundaries were almost contiguous - the Cleveland & N.Yorks Assoc and the North East Branch of the YACR. Each organised monthly meetings but they were cunningly arranged to be 2 weeks out of sync with one another, resulting in us enjoying fortnightly meetings.
In those days when communication was by written letter or word of mouth we were all in close touch with other towers and the branch committee. Attendance at the fortnightly meetings was usually around 30+ ringers on each occasion.
Perhaps I'm a digital dinosaur but it seems to me that the proliferation of communication channels - FaceBook, WhatsApp, email, Skype and all other other channels seems to have dissipated the communicatons and unless one subscribes to them all, then communications get lost in the ether.
However, my main point is that frequent well-run meetings that rang from PH methods to Surprise-8 are almost guaranteed to create greater involvement than the occasional meeting every 2 or 3 months.