In recent rides, we have had issues with losing a rider or two (One was an OR ride, one was not). Knowing the route can help with this, but people still make mistakes. I think if your gonna have more than 5 in a group, someone is gonna have to wait to atleast see the last person, just to make sure no one got lost. I had to chase down a guy for 10 miles because he missed a turn. Luckily I knew the area or he would have been in Woodsfield while we were on Route 7. He had no idea where he was or where he was going. If you don't know the route, let your group know. This way they don't leave you stranded.