I have used ram mounts
Locally I get them from
http://www.ja-gps.com.au/RAM-Mounts
I used "B" size ok, just for the WO 10x50 a bit too much flex for 10x70's at some angles
I have a manfrotto tripod with a ball head, manual screw not joystick
handles the weight OK...and copes with the abuse as well. I was trying to duplicate this with the ram mounts