RE: How to get on plane on Ftype and what is the correct stance - need help.
Don't even bother about real pumping before you have got a hang on planning sailing.
What you can do, and almost qualifies as pumping, is to pump with the back hand while you are hooked in in the harness.
It gives a little surge of energy that helps you pop onto the plane. But, you will hardly ever plane if you have your front foot anywhere near the mast. feet back first, lean on the sail, and pump with your back hand.