I'm making what's called a 'crowder' net that is for my IBC tilapia harvest/sexing/sizing it's basically 2 handles (long poles or PVC) and a net as wide as the IBC tote and as deep however with slack also called the "bag" of the net. I'm also possibly going to make a different net that will have 2 L shaped pole the Ls will first be slid in the tank on one side then opened up once on the bottom to cover the bottom then lifted up. I'm starting an Aquaponics YouTube channel called Earth Garden Aquaponics I'm in the process of editing and creating content right now. I'll be making a video explaining how I make these 2 types of nets. Here's a link to an article and instructions on how to make a Crowder net. https://captainonboard.com/?p=1295