The Surf Cube in Fortnite Chapter 6 Season 3 Super allows players to ride a hoverboard around the map to speed up traversal.
To acquire the Surf Cube, players can purchase it from Lightrider at Shiny Shafts for 300 gold bars or find it in various locations such as Academy Tech Labs, B rank Hero Caches, Hero Stands, or random chest loot.
Using the Surf Cube involves pressing the shoot button to summon a surfboard made of blue cubes. Players can use sprint or aim buttons for a speed boost, with each ammo piece equating to seconds of ride time, allowing a total of 150 seconds of use.