After six races in blustery conditions on the Broadmeadows, Malahide, Adam Hyland/Bill Staunton (RStGYC/SSC) took the Curradinghy-sponsored 420 Leinster title from Robert Dickson/Sean Waddilove (HYC/SSC) by virtue of two race wins.
Hyland & Staunton won the fourth and fifth races to edge out their northside rivals who were second in four races.
The Malahide cousins Lizzy and Cara McDowell also had a consistent series and also won the third race to finish third overall, a point ahead of the Royal St.George YC sisters Kate and Alanna Lyttle.
Best placed of the silver fleet was Philip McDowell & Cian Buckley of the host club in 7th overall.
Taking the two best results from three events – the Munster Championships, ISA Youth nationals and the Leinster Championships, the following ten crews have qualified for the 420 Worlds in the following order:
Hyland/Staunton; Dickson/Waddilove; McCann/Walsh (RCYC); Whittaker/Whittaker (RCYC); Lyttle/Lyttle; McDowell/McDowell, McMahon/O'Sullivan; Ni Shulleabhan/McGinley (KYC/RCYC); McDowell/Buckley; Lee/Jordan (GBSC/HYC).
The first seven crews also qualified for the Junior European Championships.