RE: Stupid glasses !
Try a Bucket style hat like Gilligan from Gilligan' s Island. Brim is very pliable and can be shaped to block the sun and not screw up you draw. It can be bent up in front to stay our of your draw and down on the backand side to block sun from behind. Go to local store and check them out. Also some can be reversable camo on one side orange on the other so if you are required to wear it to/from the stand you are covered.