I think simon was trying to make the point that trials bikes require a whole different set up from a skate park for example big rocks, large drops, rails... and so on and so forth.
These can prove dangerous in a public place like a park for instance. So big sharp rocks in a public park would be a health hazard and the council would not insure the park (how many people have seen little kids sliding down half pipes? >_< )
Unless its a private "trials park" i can't see it happening, but what the hey my names down.
David Fawbert (Y)