An instructional video for fishing crews on how to set up a twin-rig trawl (2-wire and 3-wire versions). The video explains how to make the correct adjustments in order to achieve a square and level set of fishing gear. This allows the fishing gear to perform at its optimum. Written and produced by the Seafish Marine Technology Group. Music is royalty-free by RKMS (Nottingham). Originally made in 4:3 and presented here in 16:9 aspect. Editor: Julian Swarbrick Executive Producer for Seafish: Mi