Convert your tripod's bowl platform to achieve leveling base function with a 3/8"-16 screw using this 75mm Half Ball to Bowl Adapter from Sunwayfoto. Made of T6061 grade aluminum and stainless steel, the elongated handgrip features a rubber wrap that increases friction for improved handling and protective rubber pads to keep your ball head from getting scratched.
An external bubble level provides an unobstructed reference with the ball head mounted, and a counterweight hook at the bottom of the base allows the hanging of a bag or backpack for additional stabilization in windy conditions. The hard anodized finish ensures resistance to abrasion and corrosion over time.