Flash frying is the secret to "fish"
I rarely fry fish in a skillet,feeding 5-20 just takes to long
My 50/50 Lard/Coconut oil mix has never gone rancid after 3-4 weeks without refrigeration
I filter twice and usually get 3 big cook offs out of a 2gal run of oil
My big "witch pot" takes 10 gal and I get three runs on it at a two day event