Guess you all know how to do bush cryovacing ???
Clip lock bags to suit item to be cryovaced. (essential)
Big pot of water.
Place contents into the clip lock bag, immerse bag into the pot of water ensuring water does not pour into bag thru the open top. The water pressure acting thru the bag walls onto the contents will force the air out.
Clip lock the bag top.......presto, contents are bush cryovaced..
Works well. I use it for fish fillets.
My 2 bobs worth