GOLF IS NOT about Conservation of Momentum (angular or linear). The physicist that advised Dante and started misunderstanding GOT IT WRONG. Chochran and Stobbs GOT IT WRONG. The golfer is NOT a body subject to a CENTRAL FORCE.
The GOAL of a golfer is to get the club head properly oriented and moving on the optimal path with the highest possible velocity. When the mass of the club head meets the mass of the ball MOMENTUM is transfered from the club head to the ball. Everything else is bullcaca.
Interested in how the highest possible velocity is to be generated? And how do you ensure that you keep it on the optimal path? That is what biomechanics is about, I believe.