i managed to get a place on the all dayer northants police do at silverstone
 but me bloomin brother has decided to get married that day
 
   must say that i did the road based one  a couple of years ago and it was supurb.
 think it does depend on who you get though 
 i was shown to use the whole carridge way in order to increase visability through bends etc
 have since been to a small talk by police advanced instructor who said it is a big no no