Hi, Chris Everyone should always start trials. It just takes time,practise, and patientince. I know your wanting to practise on a GT Tempest you can only really try to do little back wheel hops as the impact might be to high for the rims to handle. You dont need a clun alothough you can join one.What most people do is get together at differnt rides(look on trials fourm) and give you the details, just hop on the train and your down there. Just put a topic on trials fourm asking if theres anyone in your area:) and then you'll have some people to ride with and pick up and learn differnt techniques. hope this helps Andy