Extraordinary events require extraordinary locations. Therefore, over 8,000 seats were erected for the X-fighters in the Olympia Park Lake in Munich. Our team was given the task, with poor weather conditions and a lake depth of about 1.50 metres to erect this grandstand in a very short period of time. It is hard to imagine what efforts this requires to erect the supporting structure under water for each action. Despite these circumstances, our team was able to complete this system on-time for the event.