Agility training at local park - he won't do it!

Hi, does anyone have any tips on how to get Dan focussed on training anywhere other than our club? I have tried to get him trsining at the localpark but the little g*t just legs it! I can get him in a wait in front of a jump, but as soon as I say "go" he does - big time! He's fab at our club, but seems to think he only has to do it when he's there or at a show and it's really setting us back. I'm sure this is linked to other problems I have with him, but I won't go into that here!
Thanks