Pow Casting Depth Charge Snap Weights Deluxe Heavy Boat KitDepth charge clip on trolling weights provide an efficient method for increasing presentation depth. The 50 50 rule allows anglers to achieve an additional 7 feet of depth per ounce of weight: deploy 50 feet of line, attach the weight, then release another 50 feet. The integrated spring tension and rubber pads secure the weight firmly to your line, while the center retaining pin provides additional retention assurance to prevent accidental detachment.