Is there a lot of stuff in the way ? Plants or decor ? If so, netting can a challenge. However, my preferred method to catch almost anything is to get a clean deli cup 32 oz size, or something similar and submerge that. Then I use a net or my hands to ''herd' the chosen into the cup. It is less stressful than being caught by net, I think. Just lift the cup, water, shrimp 'n all, and gently release it into whatever you're putting them into.
If there's too much water in the cup, simply tip some of it out.. as much as you need to, but keep a hand over the top to prevent jumping out.