What worked for me was to attend one, any one, and ask around. Especially ask the people who have a sound you especially like. You probably won't get more of the same, but you'll get more leads than you can follow in a lifetime.Now, closer to the Mason-Dixon line than County Claire is the Province of Ontario. That's in Canada. There's a great festival every weekend, often two. Between weekends, well you practise the new licks you learned and check out the exquisite beauty of the Canadian Shield, Ottawa Valley and St. Lawrence Lowlands. Can't be beat.
CH the camping Ontarian.