The Lions have once again jetted to the Southern Hemisphere with an imposing squad and the 2007 World Cup-winning skipper reckons Warren Gatland's men should stick to what he sees as their strengths.
"The Lions have to be physical, it's their biggest asset," the 111-times capped front row forward told the South Wales Argus.
"They will look to their strong tight five and big carriers and I don't think they should try and change that.
"I sincerely hope that they don't try and beat Australia with fanciness, that's exactly what the Australians want them to do.
"The Wallabies have got dangerous players in their backs and have always been good with turnover ball and at 'disrupted' rugby.
"They are geniuses at making an attacking plan work and being hard to stop, so it will be interesting to see what defensive system the Lions adopt.
"Australia are not the (physically) hardest to play against but in no way are they soft.
"They are tenacious and have a fighting spirit that means they never give up, so it's going to be a tight series."
And Smit has warned that the once in a career prospect of facing the famous tourists will drive the Qantas Wallabies to new heights.
"I was lucky enough to play about 11 minutes for Natal Sharks against the Lions in 1997 and then 12 years later I went up against them in the Test series," added Smit.
"That's a great privilege because some guys never get the chance. British guys are lucky to play for the Lions but it's special for us too, because you can have an amazing career and be unfortunate to miss it.
"If I'd been asked a year ago then I would have predicted a landslide victory for the Lions.
"But the prospect of the tour has revitalised Australian rugby and that shows the importance of the Lions to the people that they play against.
"All of a sudden the Brumbies, Waratahs and Reds are all competing hard while the Force are not as easy to beat as they have been in the past.
"A lot of that is because of the chance to play against the Lions. I'd still go for a 2-1 Lions win but it's going to be a lot, lot closer than I thought a year ago."