I don't know but I get the impression that dogging in the UK is on the decline because of the number of time wasters or people who have frightened couples away in the past.
Here in the Midlands they have closed most car parks with barriers after dark and there are fewer and fewer places to meet. A couple of years back it was a doggers paradise but less and less people go out now and when they do it tends to be all single males.
Both alone and with my girlfriend we have responded to several ads but like others who have mentioned it here, they have either not turned up or misrepresented themselves and come up with pathetic excuses. Such a shame for those that are genuine. :cry: