Castnetting Bait in Stump Pass May 30, 2012 by Another Keeper Leave a Comment Loading up the boat with fresh, lively bait is essential when heading offshore. With his 12 foot castnet weighing around 50 pounds, Captain Tom McLaughlin stalks the Threadfin in a local pass in the early morning light. Captain Tom watches for the school of Threadfin to appear. He throws the 12' castnet over the school. It lands on the water and sinks down capturing the flickering baitfish. Deckhand Jordan helps empty a full net into the baitwell for the days fishing.