Dowco Marine is the premier manufacturer of replacement bimini tops for pontoon boats, fishing, and runabout boats. Our proprietary ClimaShield Plus® marine fabric is 2x stronger, and 3x more water resistant than our best competition. ClimaShield Plus is the patented first-choice for bimini tops and boots by some of the biggest boat brands including Tracker, Suntracker, Alumacraft, and Lowe Boats.