Ettingshausen, a TV fishing personality these days, is in New Zealand promoting the Discovery Channel's Shark Week which begins on Sunday.
He said not much had changed at the Auckland NRL club over many years, where a team which could frighten the opposition almost always came unstuck.
"The Warriors always had a team you were never happy to play against," said the 51-year-old Ettingshausen, a one-time NRL pin-up boy who played more than 50 State of Origin and test matches and over 300 games for his beloved Sharks.
"I remember running out years ago...the Sharkies had a small squad of players, and you'd be walking out of the tunnel next to the Warriors who are like man mountains. It was amazing to think you could even beat them. But your defence would hold, and you'd win comfortably...and shock half your own team.
"They need to get the guys playing at seven or eight out of 10 every week, building that...I think in the end you've got to have a real good camaraderie. It's about mateship, it's about wanting to play for the guy next to you.
"You need to build that real close friendship, which you would think would be there with the Warriors with so many of them growing up together.
"At the moment everybody sits back and thinks the Warriors are a good chance but it probably won't happen soon. But I think they will shock everyone very soon and be holding the trophy high. The Warriors are a real chance every year."