Dropped twice on very difficult chances, Harding was furious with himself as he misread the flight of a Tom Lance off-spinner which clipped the top of the stump, virtually ending Tech's chances of a 150-plus score.
United's medium pacer Ritesh Verma showed his usual consistency, being difficult to get away and certain to hit the stumps if the batsmen mistimed their strokes. Viljoen came back for his last two overs and quickly wrapped up the innings, getting Roebuck as last man and the only other real contributor.
Set 115 to win, United wanted to get into the cold beers on a warm day, and although Lance went early and was injured when bowled, Viljoen went into attack mode with 48 from 32 balls, including seven boundaries, before trying one too many off Watkin and losing his stumps.
It would have been good if United captain Max Carroll could have batted from start to finish in his last game for his club before departing overseas, but he was caught on the boundary off Watkin.
Chris Sharrock and Robbie Power were in no mood to just move the ball around, running hard threes and even a four off an overthrow, as they put on 26 runs in just over two overs to have the innings sewn up in little over an hour.
For Carroll, heading to England on his OE to play some cricket, then going to Austria, it was a fine farewell.
"It's a good way to take two trophies for the season."
He praised Viljoen for what the South African-born Namibian import had brought to the team over the latter part of the summer.
"He's a quality player. Got out in a silly way today, but he knows that."
It was United's seventh straight 50-over title and Carroll could not explain why the 1st XI always does best in that format, given this year the competition was moved from the start of the season to the second half.
"I don't know what it is, it just clicks."
