If I come across junk like this I wrap it up and sink it or take it in and let the owner come get it. See my other posting. Get a length of stainless pipe, weld a stainless knife blade to the end, and weld a piece of flat to the blade end, hooked back at a small angle so it keeps the line/net against the blade while you tear it up. Bung the pipe with expanding foam so it floats. Don't attach it to yourself with a lanyard in case you loosen something heavy which then hangs on the hook.