Like Mariposa is a big city. Don't blink going through on your way to Yosemite or you missed it!! I traveled 99 a lot but your club map didn't show 99 so I was lost. Me getting lost isn't anything new though. I did notice some faces I thought I may have met at some of the fly in's though. Could have been at some of the races??
You didn't mention if your club had an instructor and club trainer for new people. My Central Valley Model Flyers club [field was in Planada, another thriving city] kept a trainer and buddy box there for teaching. The Merced club had several instructors but the students needed there own plane. Not sure what the Fresno club has but I know they have several instructors too. Fresno is a very nice field and has some great guys there too.
The Mariposa club is no longer in operation, it went under about two years before I moved, lack of members will kill a club every time!!