Having looked at our latest entry list there is still a lack of U21 entries despite our efforts to attract more with a reduced entry, surely there are some adventurous U21's out there who want something more than a downhill adrenalin rush and air.
Come on and try the Polaris, it really can be fun.
Maybe you should post a message on the MBUK forum - I beleive they're all under 21 on there.