Ness are you talking about a throw net (also called a cast net)? They work great but make sure you use one with small enough holes. I accidently bought one with 3/8" holes, and it was difficult to catch small fish with it (the upside to nets with larger holes is that they sink faster, and if you only need larger fish, you won't have to worry about catching a bunch of smaller ones) They can take some time to get good at, but they're worth trying if it is legal in your area. Here in CO they can only be used for certain species.