On most drop aways,it doesn't matter how you place the c0ck feather if they are timed properly.Yet,another reason I prefer feathers for hunting,what if you nock the arrow wrong in the moment of truth and don't have adequate clearance? Feathers will fly true.
My Whammy has prongs like a standard prong rest,as do many other fallaways and shooting c0ck down is more suitable.