A 10-point ride capped off McGonagle's outstanding performance at the WSL QS 1,500 in Punta de Lobos.
With the Ron Jon Vans Pro Junior wrapped, the first event revealed who's leading the charge early on in the 2017 season.
The Ron Jon Vans Pro Junior Men and Women's event got underway to begin the 2017 North America season.
The 2017 edition returns with men's Qualifying Series (QS) and both men and women's Pro Junior events.
Heading into the final event of the Women's North America Junior Tour, only one regional spot remains open into World Junior Championships.