Centerboard shim

I have 760 a custom flex and the board moves side to side a fair bit.
Rather then tip it over and shim the trunk, has anyone pulled the board and shimmed the board?
Seems like when all the way down you could shim it above the gasket to the same effect.
One person said something about gluing carpet, but I couldnt tell to what, board or trunk?
Thank you,

If you live within a reasonable distance of Flying Scot Inc, the factory did a great job on mine!  They narrowed the top with fiberglass and let it cure. They put the boat up on stands and shimmed/filled the bottom of the trunk.  The board is covered in wax paper and lowered into the wet glass to create a nice snug fit.
It cost a few hundred bucks, a few years ago, but Harry and his team are pros.  The guys at the factory are true craftsman.

Two good tips. Still thinking on pulling the board and shimmig it. I am sure the board needs some TLC. Plus I have the old vinyl gasket. It looks perfect so I would prefer to leave it alone. The last owner flipped the boat, used a 2 part epoxy  & did fantastic job on bottom. Board is the last thing to fix & ( in the right hands) this is a competitive boat. 

Does anyone hve details about shimming the board with thick outdoor carpet?

If memory serves, the Scot class rules only permit shimming of the Trunk, not the centerboard itself.