Otago beat Canterbury 34-21 in the final, coming back from 21-10 down at the break.
The news, though, was not as good for the Otago women's side, which crashed out in the semifinal to a fired-up Tasman team, losing 19-17 and failing to qualify for the national tournament in Queenstown early next year.
The men's team had no such problems, after scoring 24 unanswered points in the second half of the final.
The play of the game came from Weber. With Otago up by one point halfway through the second half, he made a try-saving tackle 10m out from the tryline.
He then proceeded to get straight up, grab the ball and sprint 80m to dot down and give Otago some breathing space.
He followed that up with a try, which put the final nail in the Canterbury coffin.
Otago coach Roy Hawker said Weber was a "magic kid".
"Pound for pound, he would be one of the best sevens players in the country.
Canterbury tried to run over him in the final but he stood up to them and knocked them over," Hawker said.
"Titch [national sevens coach Gordon Tietjens] has some concerns over his size against the big Polynesian teams but he proved today he can stand up and put them down."
Weber's two tries in the second half, along with two from forward Adam Knight, swung the game for Otago in the final after it had been slow out of the blocks.
Overall, Hawker was pleased with his side's effort and felt Otago had played the best sevens at the tournament.
"Sevens is that sort of game where guys have to back themselves and use their skills. And we had those guys who could do that today.
"But it was also pleasing that there were guys there, too, doing the hard yards and not making it easy for the opposition."
Otago had two relatively simple wins in pool play, beating North Otago 43-5, after leading 17-5 at the break, and beating Mid Canterbury 35-21, after being ahead 21-14 at halftime.
Otago fullback Tony Ensor used his blazing pace at times, and both Peter Breen and Matt Faddes had their moments.
In the semifinal against Tasman, Otago won 43-14, pulling away from a 15-7 lead at the break. Faddes helped himself to two tries.
Hawker said Otago would now keep training for the national tournament in Queenstown on January 12-13.
The competition for places in the team was becoming intense and Hawker said that was ideal.
"Nothing brings out the best in guys more than internal competition. Guys knowing they have to perform as well as they can to even get in the team."
The Otago women will be disappointed, as they appeared heavily favoured to beat Tasman in the semifinal.
They led 10-5 early in the second half but then conceded two sloppy tries to go down fighting when scoring a try on the final whistle.
The side had earlier drawn with eventual winner Canterbury 7-7, and then beat Southland 33-0. Canterbury beat Tasman 34-0 in the final.
North Otago beat Mid Canterbury 17-12 to go through to face South Canterbury in the playoff to see which men's team qualified for the national tournament.
South Canterbury ran away with the game to win 43-7 after leading 14-7 at the break.
