CORE was a forum of sport bike riders that started sometime in the late 90's. I joined around 2000. We honestly never cared how fast anyone could ride. We asked everyone to stay within there own limits and waited at every turn for the group to reform. There were some VERY skilled riders and the rides were well organized. The ride rules were discussed online and at the meet spot. There was a "core" group of about 20 riders that rode most weekends the weather cooperated. At first the rides pretty much followed "The Pace" but as people's skills grew the rides got progressively hotter (while still following established pre-ride rules) especially considering the bikes, equipment, and tires we had in those days. The rides were typically 400-500 miles days at a hot pace with just a few short gas stops. Everyone knew everyone and the rides were great fun, until...
CORE got a reputation as bunch of "fast guys" on the street. We suddenly had lots and lots of new people showing up to rides, which was good and bad. We met some new skilled riders, but more often we met people with lots of ego and less skill. We would give new guys the "CORE speech," ask them to take it easy and have them ride in the back with a skilled sweep watching to see how they were doing. We tried to "coach" new guys. Some of the new guys fit right in, some were asked to tone it down, some were asked to leave rides and not come back...unfortunately we had a flurry new guys crash that were trying to prove themselves to the group. We tried a few things...
Group rides were broken into A & B groups. New people had to ride in B until an A vouched for them. That didn't always work.
We only let new people join certain "learning" rides, that were held once every month or 2. Most of the "real" rides were private or just not posted.
...Inevitably all the rides became private. The "core" members still rode frequently and the rides were still great fun. The pace we rode just wasn't good for adding new people unless they were level headed with lots of skill (that disqualified about 98%). And that's how CORE operated for years. Over time people moved, had family responsibilities, stopped attending group rides, etc until CORE ceased to exist out of attrition. Some of us are still around...