One member has been there longer than me. Five months after I joined a forced landing was an insurance write-off. One member bought the wreck, left the Group, and flew it for several years after rebuild. The next aircraft was flown into cloud, leading to a loss-of-control fatal. The present aircraft was bought in December 1999. One other member has been 17+ years. Three are less than 5 years.
PS We don't have a detailed Group agreement - it's just a few lines.