[BerntR]

The tool is the same as you use in extencior action.

But with driveloading you are moving your hands towards impact with a right arm thrust in addition to moving your hands towards impact with your shoulder turn and the rest of the body. If you fail to align you pp#3 pressure (right index finger) for a down plane thrusting effort there's a huge risk that you will thrust the club face open through impact. You can also get over the top, create a pull hook and produce a myriad of nasty results.

When you drag load you do not depend on aligning the pp#3 pressure down plane early in the down swing. You rotat pp#3 to give room for more rotation in the back swing and you use a pitch elbow in the down swing to save as much rotation for later as possible. You're basically just pulling the grip end of the club down plane and you let CF release the club. The throw-out. As I'm sure you have seen Yoda demonstrate, you use extencior action to keep the left side tense. As long as you manage to keep this tention high your pivot will swing your arms and club with high leverage.

As the club itself starts to release you use extencior action to resist slowing down of the hands. This will feel quite similar to driveloading and the effort is no less, but there is perhaps a sensation that you're pushing against a wall and not pushing something that actually moves. And you also use extencior action to limit the slowdown that is caused by the collision with the ball and by then I believe there's no real distinction between driveloading and drag loading. So the right hand is doing a lot of work also in a dragging proccedure. Just not in the Newtonian sense of the word. A lot of effort goes into it but the effort that produces motion in itself. It just sets you up to maximise the output from your pivot.

I hope this was more clarifying than confusing. There certainly others here who can bring the message home without writing a full thesis about it.