Ballast is how a ski boat makes a wake worth surfing — weight in the right corners, filled without a garden hose circus. Welcome Board Store keeps Eight.3 Plug N Play bags, a Ronix pump and a Raptor Sumo so you can add displacement on Australian lakes without fabricating tanks.

Bags & pumps

• Eight.3 Plug N Play Malibu/Axis MA80 400 lb and Malibu standard MA140 400 lb kits, plus a Telescope Trapezoid bag.
• Eight.3 Boost 25 lb and 50 lb bags for the last bit of shape.
• Raptor 900 lb Sumo V-Surf uncovered bag and a Ronix Plug N Play pump.

Wake shape also comes from wake shapers. More boat kit: boat accessories and Eight.3. Shipped from Mornington.