Wonwoo's gold medal was the first that Korea have picked up in the 41 year history of the ISAF Youth Sailing World Championship and Barnes and Barbuto picked up the first ISAF Youth Worlds medal for the U.S. Virgin Islands.
Many of the other sailors improved on their performance from the 2010 ISAF Youth Worlds and those sailing at their first ISAF Youth Worlds saw steady progress throughout the week.
On the coaching received throughout the week U.S. Virgin Islands 420 Girls crew Barbuto said, "It's helped because it gives you a perspective of the course and different coaches see everything differently."
And helm Barnes enjoyed the competitive nature of the racing in Zadar, "I like competing more than just going for a stroll.
"I love the tension between all the boats trying to figure out all the shifts and different angles and everything." View an interview with the U.S. Virgin Islands Girls here.
Korea's Wonwoo finished second at the 2010 ISAF Youth Worlds in the RS:X Boys but bounced back to go one better and the interactive nature of the coaching certainly helped his cause, "The APP coach has taught me the wind shifting, wind condition and pumping tactics.
"I like the sailing video because I see myself and the training is a very good programme." Cho Wonwoo spoke to Hugh Styles in Zadar. View an interview here.
Puerto Rico's Alejandro Monllor sailed at his first ISAF Youth Worlds in the RS:X Boys, he said, "I've learnt a lot about my speed upwind and my pumping techniques and also in my downwind and how to maintain my speed.
"I will go forward to campaigning for the 2016 Rio Olympic Games." View an interview with Monllor here.
SL16 duo Jonathan and Kenton Shue (HKG) learnt from Styles' multihull experience after his sixth place finish with Adam May in the Tornado at the 2000 Sydney Olympic Sailing Competition, the pair said, "Coaching on the race course really helped us in the regatta. We've learnt how to read wind and which side of the race course is more favourable and how to get clean wind round the marks." View an interview with the Shue's from the final morning in Zadar here.
Find out more information on the APP here.