Even when the chips have been down, in the home crossover losses to Championship unions Hawke's Bay and Bay of Plenty, Vaipulu finds a way over that gain line.
"It's hard, we're not getting the ball we are used to getting, though I'm happy with the way things are truckling along. But it can get better."
Vaipulu is the senior statesman of the Steelers pack, closing in on 40 games, and he is happy to take that leadership role in a very young squad, which lacks little for talent but needs to sharpen its decision-making under pressure.
He may well mark another strong ball-carrying Tongan, Hapakuki Moala-Liava'a, in Albany, and will need to keep the young turk quiet.
"You can't afford to button off against any side in the competition. They all come with their threats. We'll try and take care of that early in the piece rather than leave it to the end," Vaipulu says.
There are a raft of good Steelers loosies seeking game time and starts, but Umaga needs little reminding of the value offered by Vaipulu.
"He's been with us awhile and I put it on him, when he plays well, guys follow. I couldn't ask much more of him," Umaga said.
You may wonder why Vaipulu is not in England preparing for Rugby World Cup with Tonga. That may still happen one day.
"There were some whispers here and there, but that ended pretty quick. I've still got some unfinished business here. I'll stick around and hopefully things open up further down the track and I'll be able to grab it with both hands."