a clean liter coke bottle, cut off top, cut off neck to size that will admit the fish you want to catch. Reverse neck/top into body of bottle. Glue. Bait. Fill with water and sink somewhere near the miscreant's territory. There is the hook method, the lowering-water method, and various others, but this one works pretty well. If this is too complicated, get a wine carafe, bait it, and stand by to net the neck.