It was very good to start with a group of 8, because we had 4 bikes to share. One hour is plenty of time so it was good to keep taking turns. The bikes are easy enough to handle for a beginner and they offer challenge enough for those who dare to try their limits. After a couple of rounds I could take my first mini-jumps, and the feeling was great :)
Highly recommended! Best thing is that you can do this all year round.