Author : Fred Riehl
Surfboards are made to float on the water. They have a natural center of gravity. If you were to lay any surfboard in a swimming pool, it would come to rest the same way every time.

What you want to do when you lay on a surf board is to have the board remain in the same relation to the water as it was without your weight on it, just a bit lower in the water.
Mark The Balance Point
A good tip is to find this balance point is to lay on your board then make a mark right at your chin. This spot is best made with a bit of wax or a magic marker. It is a reference point that enables you to put your chin on the same spot every time, so the board will react to your weight the same way every time.
Pearling
If the board’s nose digs into the water it is called pearling and you must move the location of “your chin” back. To adjust, just slide back an inch from the mark and make a mental note.
Corking
Too much weigh in the back and the board will cork. This is a common mistake amongst beginners. You cannot catch a wave if you are corking your board. Move up an inch at a time till the board lies in the water naturally. This will provide you with the maximum hull speed and minimum drag from the water displacement that you are causing with your weight.
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