But Bolt appeared to be deprived of service for much of the first half - the Mariners preferring to play up the wings leaving Bolt with an outstretched arm in the air, similar to his trademark Lightning Bolt celebration.
"My first start and scoring two goals, it's a good feeling", he said.
'I'm happy I could come here and show the world I'm improving.
In his maiden start for the Mariners, the Olympic legend looked nervous early on and, by his own admission, panicked when his first goal scoring opportunity arrived in the opening minutes.
The world's fastest man struck in a 20-minute second-half period as the Mariners eased to a 4-0 win over Macarthur South West United; the first was a coolly-taken individual effort while a defensive mix-up gifted him a second in the pre-season friendly in Campbelltown.
The partnership with former Leeds and Aston Villa man Ross McCormack and Bolt already has the potential to surpass the pairing of Peter Crouch and Jermain Defoe.
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Bolt is a Manchester United fan, and while things are not going well for the Premier League club now, they aren't quite bad enough to justify handing him a contract, or even a trial.
Bolt retired from athletics after the 2017 World Championships and has been eager to forge a new career in professional football. I try to get better and I am on the way to doing that.
Bolt said he had a "lot more to learn" and was keen to join the Mariners on a professional contract.
"Slight improvement if you want to say that but his touch is still very poor", Bosnich, now a Fox Sports commentator, said during the match.
In the 55th minute, Bolt received a ball close to the six-yard box but despite pressure from the defender, he held his ground and netted in a low strike to score his debut goal.
I think my touch is that little bit better; my vision needs to improve a little bit more.