ADDs
From Footbag Reference
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ADDs
An ADD is a recognizable additional degree of difficulty, and is used to define overall move difficulty.
ADD Catagories
There are currently five different ADD catagories.
Delay [del]
This Add is awarded to any move in which you catch (stall/delay) the footbag on either your foot or part of your leg.
Dexterity [dex]
This Add is awarded when you circle of cross the footbag with your leg.
Unusual Surface [uns]
You get this Add when you use any surface of the body besides the toes, insteps, outsteps and knees.
Body [bod]
his Add is awarded to any move which involves a spin, jump,duck or twist of your body.
Cross Body [xbd]
This Add is awarded to any move which involves a kick or delay done on the opposite side of your body.