One of the things people have a hard time adjusting to in 6th edition is terrain placement, specifically when set up by the players. Now, yes two decent human beings should be able to do it with no problems, but not everyone is always a decent human being (even me). With that being said, Ken Blakely of the Second Founding posted a video explaining a method he pioneered that was a precursor to the current Adepticon Primer method that will be used this year for the GT.
Now, before you turn your nose up or move on, give the video a view and see what they are talking about. Myself and Chuck play with this method in all of our pick-up games, regardless of whether or not the tourney we are practicing for uses terrain placement. Not only do we find this modification fair for both parties, we find it to be a fun way to help set the conditions for your army and that way neither player can blame the board set-up for their win/ loss without pointing the first finger at themselves. Enough of my thoughts though, below is the video, demonstrated by Greg Sparks (American ETC Captain) and Adepticon 2012 Warmaster, Brad Chester.
