I do salmon every year during christmas time of year... I'm sure there are some pictures on here somewhere

I use the same brine/recipe for all fish I smoke
Take a cooler
Pour in a bunch of kosher salt, dark drown sugar, some soy sauce, garlic powder, and a bunch of dry white wine- chardonnay, rhine, anything will do. Then a bunch of water.
The original recipe is a whole box of salt, a whole bag of sugar, a whole bottle of wine and a gallon or 2 of water.
that makes way too much so I scaled back and go by eye/feel.
Once the fillets are on the smoker grind fresh black pepper on some.
I literally just mixed a batch of brine up 15 minutes ago that I'm soaking porgies in right now

I'm doing more tomorrow and will take pictures.
For perspective, I use an igloo full size playmate cooler and my brine mix is about half to 5/8 of the cooler of liquid