Extra support for vertical slide on a V-1200

The longer the slider, the more it will wobble on the top of a vertical slide. This action is very similar to that of a diving board where as you get farther to the edge of the board, the more it will bounce. There are various ways to rig the slider so that it will be stable. We like to use a second tripod raised up to the same height as the upper foot and clamping the foot to the fluid head arm.