I wonder about the silat connection to original Moro systems.  I will not deny that there may be some relation, but from what I have seen of silat, it seems to go mostly near the ground.  From some old photos of the turn of the centyr and a particular Moro practitioner on Cecil Quirino's Crossing the Sulu Seas, Moro martial arts may not be as low to the ground as silat. 
 
Just my limited observations so far.......
		 
		
		
		
		
		
		
		
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