Dunstan and his crew got the better of the start but, in a display of boat handling and tactics that belied his age, Minoprio out sailed Dunstan to grab the advantage before the first mark.
From then on the Kiwis sailed faultlessly in the 18 to 20 knot seabreeze, leaving the Australians no passing lane, to take the gun by 29 seconds, and clinch the regatta with a race to spare.
The young Kiwi described the regatta as "awesome", saying "it was awesome competitors, awesome racing, it was really good competition over here, the Australians like Mike DUNSTAN, and Laurie JURY from back home."
Talking about the crunch match that won him the trophy he said, "we saw a few shifts, our crew work was better, and we managed to out tack him."
The Sydney team were philosophical about their defeat, "Simon completely outsailed us in the race that counted today," confessed the skipper, "all credit to him, and we're happy."
"I've only sailed with one of these guys on a regular basis, so we came over here pretty cold, did minimal training, and did what we did, we're happy with the way we were sailing and it was a good learning experience."
Having won the regatta, things didn't quite go according to plan for Minoprio, in his final match two crew members fell overboard, but they were quickly recovered, though they failed to regain the lead.
As well as the trophy Minoprio picks up automatic entry to the 2004 Berlin Match Racing event, with a travel and expenses package.
Michael DUNSTAN hung onto second place in the series with a cliff hanger win in his last race against local skipper Jackson DIGNEY, in which he took the gun by just one second.
Third overall was another Kiwi, Laurie JURY, while Sweden's Emil WIBERG took fourth place.
The Warren Jones Youth Regatta is organised by the Western Australian Yachting Foundation, and was hosted by Royal Freshwater Bay Yacht Club, in memory of Warren Jones who was the driving force behind Australia II's historic victory in the 1983 America's Cup.
Warren Jones Youth Regatta 2004 - Final Results