Pro-Troll Downrigger Parts & Rigging Marine

The Black Box tells you what voltage your boat sends into the water – and it tunes the voltage so your boat actually attracts fish.

• 100% of Boats Send an Electrical Voltage into the Water Around the Boat
• 98% of Anglers Don’t Know What Voltage their Boat Sends Into the Water
• The Other 2% of Anglers Catch MORE FISH & BIGGER FISH