Ok here goes, How I crane:
First thing I will do in any CFO is grab the 2 safes closest to me and put them behind me while i crane. What I usually do is use the bar that holds the cranes wires to line things up and not the magnet. When you grab something with the crane, use the bar on the ceiling to line up with the CFO. retract your crane all the way closest to you and move it forward. Once you have the crane moved all the way forward, let your magnet catch up. When it appears that the object you are holding will hit the CFO BELOW his Eyes, release the object.
To remove a safe from the CFOs head, I find it works best if you try to "lift" it off instead of knock it off. What I mean by that is hit the safe on the bottom lifting it up instead of hitting it on the top.
I only have limited time right now, so this may seem confusing as I have written it. Any questions, comments or if you want to take a practice CFO with me, let me know.