Sailtrim upwind one is the first and only animated sail to learn everything about the perfect sail trim. Adjust the controls and you immediately see the shape of your genoa
and your mainsail change and it tells you what conditions the specific shape is good for. Sailtrim upwind looks and behaves like a real sail.
It its truly animated, even with sound.

It covers for the genoa: =>  Halyard tension =>  Backstay  =>  Genoa sheet lead

mainsail: =>  Backstay => Halyard tension  =>  Cunningham  =>  Traveler  =>  Vang  =>  Outhaul