The legendary Jamaican track athlete is currently trying out with the NSW side.

If the Mariners sign him up, Bolt will be prevailed upon to undergo a club ritual.

"Usually you've got to do an initiation song, but you have to be a contracted player to do that, for the first away trip," Mariners' striker Matt Simon said on Tuesday.

"If he eventually does sign, I'm sure he'll be singing.

"There is a fine in place if you don't sing, but I'm sure he would be right to pay it if he doesn't want to do it."

Simon said Bolt was very humble and fitting in well with the Mariners.

He said the extra media attention the club had got since Bolt arrived was not a distraction.

Mariners coach Mike Mulvey welcomed the interest Bolt's presence was generating in what is normally a quiet part of the season buildup, sparsely attended by both media and fans.

"Unless you're in the UK or some parts of Europe, you don't see many big crowds for a pre-season game," Mulvey said.

"What the lads in the office are telling me, there could be 10, 12,00 people there (on Friday), that's quite unbelievable for a pre-season game."

A local paper is printing 100,000 Bolt face masks, which the man himself can expect to see plenty of on Friday.

"I think that will be weird a little bit, but I've seen a little bit of that in track and field," Bolt said.

He has been well received by the local community.

"Me and the boys, we went out for lunch and a lot of people came up and welcomed me to the coast, so I'm very happy about that," Bolt said.

Among the interested observers at Tuesday's training session at Gosford's Central Coast Stadium was television presenter and former Australian Olympic sprinter Matt Shirvington, who ran one 200 metre race against Bolt, and NSW Blues State of Origin rugby league coach Brad Fittler.

"He (Bolt) held his own, I thought he was awesome," Fittler told AAP.

Australian Associated Press