You don't need us Right-Coasters. Start gathering among yourselves in twos and threes. Let other people know and your twos and threes will double into sixes and sevens. In time, it will snowball into an avalanche. [Block that metaphor!]
Seriously--pick someone's home (or a state park, or a lodge, or a resort hotel if you can afford it) as a gathering place. Now get a few people each to agree to meet and each one of you invite all the folk musicians you know, whether they're Mudcatters or not.
Don't worry about quantity. Focus instead on the quality of the gathering. Enjoy yourselves. That's what it's all about.