William I'm using a Kirk King Cobra gimbal head with their quick release system (what I had @ GFM) on my 600mm FA. The lens plate is longer than the lens tripod foot, so I can rebalance when I add a teleconvertor or change bodies. Obviously, you can use any of the previously suggested heads but if you have any thoughts about capturing (moving) wildlife, a gimbal head is one of the better options. The idea with a gimbal head is to balance the camera/lens combo at the head's vertical pivot point so the combo becomes weightless as far as vertical motion is concerned. I've never tried a video head, but I have no issues with my King Cobra. It's about the same cost as the Wimberley but I chose it because of it's simplicity. YMMV
Tom was close about me having a head to sell @ GFM - but it was my old tripod I was trying to sell. I still have it - a Gitzo 1410 aluminum tripod that I used with my 600 before I popped for the 1548 Gitzo carbon fiber tripod. Kenneth Waller ----- Original Message ----- From: "William Robb" <[EMAIL PROTECTED]> Subject: Tripod heads > Hi; > I am wondering what the big lens owners are using to support their large > sized glass? > I am interested in the advantages and disadvantages of the various heads out > there capable of supporting a super telephoto in the 3.3 kilogram range. > Thanks > > William Robb > >

