This advice is a little late but... When buying flies I've learned the hard way to always buy 3 of a pattern. My thinking is 1 fly gets sacrificed to a snag, the second catches fish, and the third is to tie from or to find an identical replacement for the future.
On the bright side you know where a larger fish is, what he bit on, and that you can trick him into biting. May your next trip end up with the fish at hand.