"We were like, 'oh man, it's going to be raining, do we still want to go there?' We decided we'd still go there and use the rain as an element in the film and that worked quite well."
The actors had to get in the water on a cold, rainy day.
"The story involved a surfer who gets slammed by a wave and knocked out by his board, but on the day, there were no waves, no swell, so we had to figure out how we could shoot it with no waves."
Despite those challenges Muir said the biggest was the actors' lack of singing ability.
He said it was tough for them because they were not comfortable singing.
"They're good actors but it's not just that they 'can't' sing, but they have a fear of singing," Muir said.
"Musical was certainly our most dreaded genre. Of all the genres we could have got, we just didn't want to get it, and we got it."
Their team, named Tinker Tailor, took out the awards for Best Director (Titulaer) and Best Cinematography (Muir), as well as Best Editing, Best Original Score/Song and Best Use of Required Elements.
The annual competition, held from May 11 to 13 this year, required filmmakers to create a short film from concept to final edit in just 48 hours. Genres were allocated on the Friday at 7pm, where three random required elements were also released. Titulaer is now working on a short film, and Muir on a documentary.