I have been using Harris bi pods for years.
I don't understand how a bi pod that rotates left or right would be that helpful.
To rotate the end of the barrel to the right your shoulder will have to move to the left and if you want the barrel to go to the left your shoulder will have to move to the right.
Moving the rifle and bi pod to the right or left a little will let your shoulder stay where it is.
I can't move my shoulder to the right or left very far without moving my whole body.
If you are standing the rotating bi pod may help but for sitting down I don't see how it would help much and for laying prone I know I would rather move the rifle than have to move my whole body.
To move the end of the rifle barrel to the right 6" how far to the left will the recoil pad end of the stock have to move to the left?