Boosties are shimmering sun-like objects (☀️) above the sea that boost fish you throw.

The number of boosties available is shown by the meter gauge 'Boost' displayed at the top of the screen.

Boosties compensate for fish weaknesses like distance or skipping.

To use boosties in the game, simply press and hold the screen. The duration of your hold determines the number of boosties you use. The longer you hold, the more boosties you unleash.