Even on a tight schedule, Sunset Sailing Trip earns the hours.
Allow 4–5 hours.
The smartest way to 'do' the famous sunset: you get the same golden light over the caldera with no jostling crowd, a glass in hand, and the sea around you. The catch is cost and that conditions (wind, haze) are out of your control. For romance or a memorable group evening, it's hard to beat.