In the early days, it was reported that police had found possible drag marks leading into "a" creek- it doesn't say Kholo. Back then, there was considerable opinion that she could have washed down to where she was found from one of the creeks near the scout camp.
You would think now, looking back at that, that a reason for them looking at this possibility, would be the unlikeliness of her landing where she did if she was dropped from the bridge.??
"A large contingent of SES volunteers and police set up camp at the scout grounds on Tuesday, scouring a massive area of bushland adjoining Kholo Creek, where the body was found, as well as Little Ugly Creek and Flaggy Creek.
Police identified what could have been drag marks near a dirt track leading into one of the creeks. They also found a mobile phone SIM card, but it was yet to be determined if either of the finds had any relevance to Mrs Baden-Clay's death." http://www.qt.com.au/news/police-find-suspected-drag-marks-near-creek/1366933/ 3rd May 2012
but, since then it has become apparent through forensics that she was likely dropped from the bridge.
She had foliage on her head and upper body consistent with foliage from the home garden but only 2 from the site, plus there is no evidence of GBC having been to Kholo.
I cant imagine that if he had walked any distance at all, dragging or carrying a body, that there would be no remnants in the car. (I'm assuming he would have discarded all clothes and shoes if he did walk there).
We guess he cleaned the car, but still, dirt on the brake pedal or something would be pretty expected wouldn't it?
Plus, to drag the body he would have had to park for longer, therefore off the bitumen, and would likely pick up something...