My mom bought a bunch of fish fillets from Costco, she is single and wants to freeze them to take out as needed. I told her I would take care of it, but now that I'm looking at it I have no clue what the best way is. Can I flash freeze it in my deep freezer? Do I have to do an ice water dip? Or do I just wrap it up and put it in a freezer bag? Any suggestions? (It is Tilapia) Thank you in advance!