Keith, I have belong to a Networking group in Florida for over 12 years. I find that our group has stayed together because we have had good leadership and have kept it simple. I have the blueprint for a successful group and would love to share it with you. If you want to contact me, my phone number is 561 620-8888.
The people are always of utmost importance. The activites should stem from them. You should have the ability to talk with your peers and discuss your experiences. You should also have access to a network of people who are in related fields. It should be beneficial to all involved.