I use several methods in the woods and field.
Left hand on the side of a tree with the TC resting on my wrist.
Fallen tree, fanny or back pack as a rest.
Big rock, fanny or back pack as a rest.
Open field, prone using a fanny or back pack as a rest.
And my most used, shooting sticks while sitting with my back to a tree to help steady me. Almost as solid as a bench. I grip the sticks by the side to steady and make adjustments. I really see no need to have my hand in the V to rest the TC on and this would also hender me if I have to make an adjustment to get the shot.