Aleh and Powrie were delighted with the outcome of yesterday's race, describing it as one of the most high pressure races they had sailed.
"It was a pretty tough race," Aleh said. "Sail by the seat of your pants, see what happens and keep hoping it will work out.
"We knew we had to beat both of them [Mills/Clark and Haeger/Provancha] and be top five if the Austrians won.
"We always wanted to do well but just had to beat those boats. Pretty early on, as we started, we were in the middle of them and kept an eye on them. The Americans dropped back pretty quickly, so it was just between us and the Brits.
"Everyone found it stressful. There was a lot happening. When the boys raced before, the wind was a little bit more set but the wind had just changed. It was one of the most unstable medal races we've done."
The Laser and Laser Radials also concluded the regatta with New Zealand represented in the Laser medal race by Sam Meech, older brother of 49erFX crew Molly.
Meech finished fifth in yesterday's final race to wrap up the regatta in ninth overall.
The next major event on the Olympic sailing calendar is widely accepted as this year's pinnacle event - the ISAF Sailing World Championships in Santander, Spain, from September 8-21.
It is the first Olympic Qualification regatta for the Rio 2016 Olympic Sailing Competition, with half the spot to be decided there.