A lot was learned putting it up though and this has been distilled into the smaller, but more easily controlled, set up at Sandown Park, Esher.
Nestling under the wing of the Ski Slope, Esher's part of a growing extreme sport complex at Sandown.
It's open from 9am - 6pm, six days of the week and from 11am to 4pm on Sunday. Just call at the shop: Sandown Active Sports, More Lane, Esher Surrey KT10 8AN. (01372 476969).
You can find directions here although the site hasn't caught up with the bike side yet.