Here at Mobile Innovations in Katy, TX we just got designing a bracket for 2 pair of tower speakers and the Z5 Cargo rack for the Malibu Wakesetters with the G3 tower.
This is a solution that won't sacrifice 2 wakeboard racks and retain all factory warranties since no new holes are tapped into the tower.
If you are interested please contact us at
info@mobileinnovationstx.com