The Waitane Young Farmers member convened last year's 50th FMG Young Farmer of the Year Grand Final in Invercargill.
"That was a real insight into the important planning which goes on behind the scenes to help drive the contest forward," said Goodwin.
"I grew a lot as a leader. I'm keen to ensure the contest continues to develop, thrive and showcase modern farming."
Woodhead leases his parents' 400 hectare sheep and beef farm in Milton and has been farming since 2015.
He competed for the first time in 2011 and took out the 2017 grand final. Woodhead convened this year's Otago/Southland regional final.
"The FMG Young Farmer of the Year has shaped me into the person I am today," said Woodhead.
"I'm now at the stage in my life where I want to give back."
Woodhead has almost completed the Kellogg Rural Leadership Programme and James was a 2018 NZYF Excellence Award winner.
The pair will replace Cole Groves and Dean Rabbidge who first joined the committee in 2014.
"It's going to be different without them around. They have invested so much into the contest and will leave big shoes to fill," said Brown.
Groves and Rabbidge were pivotal in overhauling the iconic contest to ensure it showcases the primary industries in an engaging way.
They will step down after this year's grand final in Hawke's Bay on 4th-6th July.
The NZYF Contest Board is made up of eight people, including four appointed members.
The other two appointed members, Rebecca Brown and Alastair Neville, are from the North Island.