Sixty seconds is exactly enough time -- it doesn't go by in a flash, so you can take in the experience, but you also don't tire out so you lose control.

The RipCord by iFLY experience on Royal Caribbean ships (found on the Quantum-class vessels like Anthem and Odyssey of the Seas) typically lasts for a total of one minute per flight, though most sessions are booked as a "two-flight" package. While the actual time spent floating on the cushion of air is brief—roughly equivalent to the time of a real skydiving freefall from 12,500 feet—the entire experience takes about one hour. This hour includes a safety briefing, a video orientation where you learn the four basic hand signals, and a "gear-up" session where you are fitted with a flight suit, helmet, and goggles. On many sailings, the first flight is complementary (though reservations are required and fill up fast), while "extended" or peak-time flights can be purchased for an extra fee. The simulator is a powerful vertical wind tunnel that allows guests to experience the sensation of flight while an instructor stays inside the glass chamber to help maintain stability and body position.