So, a rule of thumb on chocks would be:
Light airs – no chock – so sail is flattened by extra bend
Medium – mast chocked so it doesn’t bend more than the ‘neutral’ amount and gives max sail depth
Heavey/overpowered – no chock, flatter sail.
I’m working on the basis that I have 1 chock that holds my mast in its medium wind setting, and remove it for light or heavy going
Does this all look like it makes sense? 🙂