He took up the position of coach in 2006. He is a former international for Samoa and captained the first Samoa team that played against Wales in 1989. He led Samoa to win their first Wellington sevens and Hong Kong sevens tournament in the 2006/07 season.[3] In February 2009 it was announced that Tafua would coach Manu Samoa, replacing Niko Palamo.[4][5] His term in the role expired in November 2011.[6]
In June 2014 Tafua was appointed interim coach of the Samoa Sevens.[7] The appointment was made permanent in August 2014.[8] In June 2015 his contract was not renewed.[9]
In September 2017 he was appointed Manu Samoa coach for a second time for a two-year term.[10] In September 2018 his contract was terminated early and the position was readvertised.[11][12] A subsequent claim for unfair dismissal was dismissed by the court.[13]