For close up shots at DG, I do not use sticks , as I feel valuable time is spent setting up and using the sticks. The additional movement involved doesn't help either.
Such shots I have taken free hand.
For longer shots, usually plainsgame, I have been taught to use the two sticks, the left arm being held rigid and thus making up the third leg of the tripod. The whole thing can then be rocked forwards or backwards for elevation.
M.