"James is one of the most gifted individuals Welsh rugby has seen in a long time," said Jones, who was a former team-mate of Hook's at the Ospreys.
"If you watch the guy train daily, from a skill point of view there's nothing the kid can't do. There's no doubting that. He's thrived in France and is held in high esteem there and he poses an individual attacking threat."
Hook hasn't started a match at fly-half for his country since the Bronze Medal clash with Australia at the 2011 Rugby World Cup in New Zealand but his club form has led to plenty of calls for him to be given a shot in the hotseat this autumn.
And Wales head coach Warren Gatland has duly obliged by naming the 28-year-old at No10 for the clash with the South Sea Islanders after using him as a replacement in the loss to South Africa and the record-breaking win over Argentina over the past fortnight.
Jones reckons the 2009 British & Irish Lion will relish the opportunity and could give Wales an extra attacking edge against a hugely physical Tongan team.
"It's not all about James Hook, but what James does is buy time for the people beside him because as a defender you will always have one eye on him," added Jones.
"But the role of ten has changed and it's about picking those moments. James has a job to do like everyone else has in the team. It's about facilitating others at times.
"I don't think he knows what he's going to do half the time. With that, he becomes a wonderful attacking threat."
Hook has become a huge favourite with the Perpignan faithful since his move to the Catalan giants in the winter of 2011. He played a key role in securing this year's return to the Heineken Cup and was in sensational form in the opening two rounds of Europe's top competition.
He scored all 22 points as Perpignan came within a whisker of winning at Gloucester in Round 1, before guiding his side to an impressive, bonus-point win over Edinburgh a week later, and he will no doubt be at the heart of their hopes of success against double Heineken Cup winners Munster in the December double header.