The golf clubs at either end of the bag - driver and wedges are the clubs that require the least vertical force. The driver due to being on a tee and the wedges because they have the most loft and the shortest shaft so exhibit a huge amount of vertical force. A golf club that moves in a more horizontal plane with both ends of the club rotating around each other both in backswing and downswing will lead to the most predictable best wedges you can hit:- A low to lowish ball flight that appears to almost hover during flight a little like the flight of a well thrown frisbee, that lands softly with the correct amount of spin. Too much spin and it can suck back and too little spin and it can roll out after landing. Both too much and too little spin leads to unpredictability in distance control and distance control is the #1 element in becoming a great wedge player.

BALL SPEED

The speed of the ball is determined by the transfer of energy and the force vector of the center of mass of that clubhead relative to the center of mass of the ball during the collision between club and ball.

BALL DIRECTION

The direction of the ball is determined by the contact point of the ball on the club and the force vector of the center of mass of the clubhead relative to the center of mass of the ball in a horizontal axis.

VERTICAL SPIN RATE

The spin rate of the ball is determined by the magnitude of the force vector of the center of mass of the clubhead in a vertical axis relative to the center of mass of the ball. Each club should produce a different spin rate relative to the rest of the clubs. A low spin player is creating force to high relative to the center of mass of the ball either by too low a loft or too narrow a width of arc resulting in that force. A high spin player is creating force too low on the ball relative to the center of mass of the ball either by delivering too much loft or too outward a direction of swing. Additionally a player could make a great motion but be playing with equipment designed to produce a different amount of spin by either having a lower or higher center of gravity of that clubhead resulting in that effecting the position of the center of mass of the clubhead relative to the center of mass of the ball.