I did two runs with the Red Rock club this year (Kane Creek & Poison Spider) and don't plan on doing any with them next year.
The group is great and they did a great job but the number of people on the trail rides was way too many. I did enjoy the people that I met on the runs but seeing that I only have 4 days I need to maximize my trail time/# of trails.
For example, when I did Kane Creek with EJS this year we had 46 Jeeps on our run and it took us 7 hours/off the trail at 4:30pm. My buddies that live in Utah did Kane Creek the day after us on their own and did it in leisurely 4 hours, had lunch and had time to do another trail in the afternoon.
Same story with Poison Spider, had 52 Jeeps on our trail ride. I was in the front of the group and when we got up on top of the Mesa we were waiting at least an hour for the tailgunner. When we got to the Wedge the group was stopped so everyone could watch the 52 Jeeps go thru it. Just too many Jeeps and too many obstacles.
One thing to consider...when the Red Rock club is on a trail it is closed to the public and open to only them. Need to be strategic and plan your trail rides around the club.