I’m sure there’s a school for this kind of sign language.
Cockfighting in Malapascua is held in small venues. In this case next to Purple Snapper Dive Resort (excuse my promotion). In many a town in the Philippines, there are derby venues usually called, believe it or not, Sport Arenas that could house hundreds even thousands of fowl blood hungry men. It takes 5 minutes to confirm the bets for this match. It makes me wonder what ingenius system is implemented in grander venues.