If you're looking for a knotless net for the selective fisheries where knotless is required, Beckman does not have what you need. Even the "fin saver/pen net" has knots holding the "bottom" of the bag to the sides. Their dipped nets are a standard knotted net with a dipped coating which is to help keep hooks from getting snarled in the mesh, it's not to protect fish slime coat and scales. I do know that Beckman is working on a salmon bag that complies with knotless requirements.

Ranger Net company has some nice woven mesh (knotless) bags. They sell them as complete nets with hoop and handle, or you can buy just the bag and put it on the hoop you already have.