If you are keeping the flash to with 33 feet of the camera look at the 33 foot long cable from
http://www.OCFgear.com I have used that cable with both the 5D Mark III and the 1D X without any problems, I have even using that hardwired flash as a master for a five light set up.
While I love my PocketWizard ControlTL systems for their versatility and reliability there are times when the best solution is hardwiring a flash to the camera.