Kate Keefe and Toni Toka of the Taita RSA won the women's pairs, beating Upper Hutt's Michaela Makiha and Paea Thompson in the final.
Szabo, who is waiting to hear about his qualification for this year's World Championships, could not make it a double with the men's singles crown as he was struggling with a head cold. "I'd been crook all week and by Saturday I got to the quarter-finals and it was too tough for me."
Manurewa RSA's Cody Harris went on to retain his singles crown, comfortably dispatching Porirua's Darren Herewini in the final, five straight.
The ladies singles was also won by defending champion Judy Fenton (Whangamata), who beat Tararua's Megan Smith in the playoff.
Szabo said the local organisers had done a fine job.
"I thought the venue was great. It was very warm, but that's because it was warm outside."
In the best of the locals, St John's club's Harley Smith won the Junior Youth division.
Two Castlecliff team's got fifth equal in the men's and mixed pairs.
A Wanganui RSA team was third equal in the plate round, while a Castlecliff team was runner-up in the ladies pairs plate.
"That's good results, when you look at 300-plus [entries] per event," said Hyde.
-Local results
Junior Youth: H Smith (St Johns) 1. Men's Pairs: B Jacobson, J Hinga (Castlecliff) 5=. Mixed Pairs: A Simpson, J Teki (Castlecliff) 5=. Men's Plate: M Waldren, A Hakaraia (Wanganui RSA) 3=. Ladies Pairs Plate: J Teki and D Bromley (Castlecliff) 2.