I have a big SS fish cooker It take 4 gallons of oil to use.But the more oil in a big one like this allows me to control the temps easy.
I have cooked for 75+ on it lots of times. Thats fish,Hush puppy's and fries. I also have my fish out and laying on paper towels.
Used to cook fish for a living in restaurants. So that helps but after you get the hang of it. Cooking fish is so easy a caveman can do it.
Pete