[Burner]

Is it theoretically possible to swing(pull) with the right arm? doesnt the right side always hit (push)?

Yes, provided the right elbow stays in front of the right hand and the palm of the hand is horizontal to, and faces away from, the inclined plane. The right hand is supporting and pulling along with the left.

This "pull", however, will turn in to a push as these orientations change - i.e when the elbow is overtaken by the hand and the palm of the hand rotates from the horizontal into perpendicular to the inclined plane as it turns to face the target.