Screens will work. Screen the exit point at the pvc or hose and let the water then fall through a small net (like cheese cloth) into the water. Can also use 2 or 3 burlap seed bags for the final screen.
On the front end (lake side) put the intake hose in a 5 gal bucket with holes in the bucket side to let water in and place it in a net or burlap bag with the top of the bucket about 2 inches above the water line. You can put a brick in the bucket to weight it down.
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