"REDICORE" Trolling Line. Mason Tackle Company has engineered a new line for deep water trolling. This trolling system is easy for the consumer to use because it's pre-tied and pre-rigged. We start with 300 feet of 20 lb. dacron backing, then 150 or 300 feet of 18 lb. lead core line and finally 50 feet of 20 lb. T-line monofilament for a complete deep-water system which is ready to install on any reel.