Have just sent an email to crimestoppers suggesting they check the Scout Camp here at Karana Downs. It is isolated from houses, only takes 10-15 minutes to drive from Brookfield, he would in all liklihood have been there at some time in his life due to his Scouts connection, and one would have to drive through the hot zone to get to it from his home, where mobile could have been thrown into the little creek at the centre of hot zone. His mobile phone info for that day would be interesting - especially the pings Ms G Norris referrred to.
Is this the Scout camp where they believe she may have been left? The description sounds spot on.
It is amazing how a few of the posters here suggested the Scout Camp/Mt Crosby/Kholo Creek, earlier in the search. If the killer was looking at this forum at that time, I wonder how they felt when they saw those posts.......