Amazon.com: wake ballast : Ballast Bag (50 Lb.Weight Filled) Fine Steel Shot for Wakesurf Boats, 50 pounds Weight Bag, Yacht and Airplane Ballast. Made in USA : Sports & Outdoors
Amazon.com: MISSION Boat Gear DIY Ballast Bag with 50lb Steel Shot Capacity for Wakesurfing (Filled) : Sports & Outdoors
Ballast Bags and Pumps - For Wake Boats | SWELL Wakesurf