"I had three 7-6 wins today," Webby said referring to a streak which proved he deserved the title.
He beat defending champion John Christie of Waikato, eventual fourth placegetter Dallas Cooke of Tauranga and world under-21 champion Josh Freeth of Auckland, who like Webby, will be playing in the open and under-21 divisions at the February world championships in Melbourne.
The youngest player in action at the weekend, Webby finished one point ahead of Bullen in the final standings. Freeth was a further point back in third place which he secured on a countback from Cooke in the second annual championships.
"I'm just starting to get back into golf croquet because of my school commitments. Once my NCEA Level 2 exams have finished I will be training every day," Webby said.
His next major tournament before the Melbourne trip will be the Nelson-hosted nationals in January.
The only one of 14 Hawke's Bay starters to make the top eight, Kiwi croquet legend Tony Stephens, 73, finished sixth. On Friday the Haumoana orchardist and Christie won the eight pair doubles title with an unbeaten run which included seven wins on the Thursday and the same amount the following day.