WakeMAKERS 2002 2004 Supra Launch SSV BagBuster Rear Factory Ballast Upgrade Black Friday The ACME 2102 3 Blade 13" The ACME 2102 3 Blade 13" x 9" Propeller is a true performer thanks to ACME's continued devotion to push the ski and wakeboard boat propeller industry to new heights inboard props are helping ski and wakeboard boats achieve performances never before seen The Level 3 Package has 1800 pounds of wave building ballast in the form of a Eight It takes more than just the stock factory ballast to properly weight the boat for an optimal wake your boat will need to have the rear ballast option that was added with the Supra Gravity III ballast system