Hall (30) was the epitome of consistency throughout the match, taking advantage of some wayward driving on the front nine by Bellamy to win 6 and 4.
Both the trophies are going south after Scott Hellier (Gore) took home the Ritchie Cup for his 68 and 67 in Saturday's qualifying rounds.
Bellamy beat Hellier in his morning semifinal while Hall accounted for Otago's Ben Turner on the other side of the draw.
Another leading Otago triallist, Brandon Hodgson, recovered from his first-round loss to beat Matt Tautari (Southland) and Matt McLean (Harewood) to win the senior plate.
Other winning finalists were Scott Manyweathers (senior B), Paul Hubbard (senior B plate) and Kyle Clark (third division).
Susan Greig (St Clair) added another title to her name by beating Rachel Lissaman (Chisholm Links) in 14 holes in the final.
Greig bogeyed the first hole to trail, but turned three-up after winning four of the remaining eight holes.
She closed the match out by winning the 10th, 11th and 13th holes.
Bellamy had done all of the hard work to make the men's final and was the only Otago triallist to compete in the main event yesterday.
In the morning, he won the last two holes to make the final but struggled on the front nine in the afternoon.
The pair halved the first hole in pars but Hall went ahead when he drove on to the second green with a light tail wind.
Bellamy hooked his tee shot on the third hole putting Hall two-up which increased to three when Bellamy made a bogey five at the fourth.
Hall hooked his drive into a hazard at the fifth and had to take a penalty drop but Bellamy lost an opportunity when his approach finished out of bounds.
A regulation four put Hall five-up after six holes and the pair halved the next two holes before Bellamy struck tree trouble at the ninth to turn six behind.
Bellamy started to climb back into contention with back-to-back wins at 11 and 12 but his reprieve was shortlived when Hall birdied the par-five Tipperary hole.
Bellamy's drive went out of bounds at the dogleg 14th and Hall made a par four to finish the match.
