Freezing using salt or brining is fraught with problems. Osmosis, excess saltines in the final product to name a couple, probably best left to the experts.
One way thought to keep your fish in the freezer is to vac bag them. Vac bagging eliminates the air from the product and inhibits the formation of ice crystals. It enables you to keep fish for months at a time with little loss of quality.
"Danoz direct" has a unit that will do what you need, here's the link.
http://www.danozdirect.com.au/MintDi...tment&s=vacuum
I don't have one myself and nor am I endorsing it. The principle works as I have tried it, and you will see a lot of product in the supermarket is packaged this way.
Best of luck in your endeavours, if you do go with it, how about a mini product report for the members?