Watts was on the receiving end of an 11-2, 11-2, 11-1 lesson.
King's last national title was in 2015 where she beat Craig in the final and it took her a moment to recall her first: "It was in 2010 I think at ... Whakatane ... a little while ago."
For 24-year-old Craig it had been a tough battle to get to the final. She played second seed Amanda Landers-Murphy of Auckland for the fourth time in six weeks, Landers-Murphy having won their three previous matches. It took four tough games but Craig eventually emerged the winner with an 11-5, 9-11, 11-9, 13-11 victory.
Despite claiming her sixth national title King still has a way to go equal record-holder Dame Susan Devoy, who has 10 national titles.
This weekend she will play in the Wellington Open. Following this assignment King will head to Manchester with the New Zealand team for the World Doubles Championships after a training camp in Auckland.
King will play with Landers-Murphy, a beaten semifinalist at the weekend, in the doubles, and Paul Coll in the mixed doubles.
Greymouth's Coll, another world No 12, beat second seed Campbell Grayson of Auckland 8-11, 11-7, 11-8, 11-2 in their final, which took 72 minutes. This was Coll's third consecutive natonal title.
In their respective semifinals Coll beat fourth seed Lance Beddoes of Auckland 11-7, 11-5, 11-7 and Grayson downed third seed Evan Williams of Wellington 11-4, 12-14, 11-9, 11-8.
Both Coll and King are no strangers to success at the Havelock North club and last year won their respective North Island titles there.