I use stand up quart size zip lock bags, put about 1.5 pounds per bag and fill to top with water. I have an upright freezer and freeze the bags standing up so they are stackable once frozen. I have never had any freezer burn using this process.

My catches have given a little over 3 pounds of fillets per 30 yellow perch.

I was in Bassett's Market getting some fresh sea food and noticed some fresh yellow perch @ $33. per pound! The grouper was $35 per pound! Yellow Gold!
~Water Dog