They're all tipping former multiple champion handler John Moore for top honours again this season and he looks the trainer to side with in tomorrow night's opening leg of the Triple Trio. Stable changes are so often the key to making it pay on the punt - as evidenced by the Satisfaction Plus-New Leaf quinella in Sunday's opening event. Po On King, the suggested banker in tomorrow's third event, is a typical example of an old handicapper to change stables and take on a new lease of life. He joined Moore in the latter stages of last season and ran three times for him, improving with each outing. He ran fifth, second and then won by 11/2 lengths from Follow Me over 1,800 metres at the Valley. Tomorrow night's contest is only over 1,200 metres but these older horses can sprint well when fresh and the Valley's 1,200 metres lends itself to back runners rattling home into the tierce. And a spot in the tierce is all that is asked of Po On King to justify his role as a Triple Trio banker. Moore generally makes a quiet start to each season. This term he appears to have made more of an effort to get some of his team ready earlier and Po On King, who doesn't have many miles left on the clock as he's a rising 10-year-old, is one of them. Mashooq, representing the in-form combination of Lawrie Fownes and Wendyll Woods, is another who could be staying on strongly in the closing stages. Now down into the bottom grade, Mashooq has shown enough ability to pick up a Class Six contest. Alex Wong Siu-tan's Strike Out is another who could well be doing all his best work over the closing 200 metres in a race where Family Of Wah Yuen could lead them from barrier three. Family Of Wah Yuen is likely to ensure a good pace as will Viva St Paul's and Good Tension. David Hayes has made a point of getting his more experienced horses ready to do themselves justice in the opening meetings, aware of the fact that 30 per cent of his team have raced once or not at all and will take a fair bit longer to come on stream. His Super Missile is one of the more seasoned campaigners who has been doing plenty and doing it well. He could be the best banker in the fourth, the middle leg of the Triple Trio. Topweight Sparko has more improvement in him but could just need the outing. Peace Gallery has shaped nicely in his early season preparation for that man Fownes while Certeza has come back into training showing a fair bit more fire than in the latter stages of last season. Grand Prize did well for Brian Kan at the end of last season and can't be left out on both form and recent trackwork. He also goes well over tomorrow night's mile course and distance. For those lucky enough to be still left in the Triple Trio come the final leg, the sixth event, there is a real Rubic's Cube of a race to solve. Turf Apex makes immediate appeal as he can probably lead, even from barrier 11, and has Basil Marcus doing the steering. That is a big advantage in itself but the booking makes even more appeal as it is Marcus riding for his old guv'nor, Lam Hung-fie, and that is normally significant. After all, without Lam - for whom Marcus was stable jockey back in the 1990-91 season - the territory may never have had the benefit of appreciating the South African's talents in the saddle which have gleaned him four titles in six seasons. But Turf Apex is unlikely to be left alone in front with Third Time Lucky, Classic Turbo, Dashing Dragon, Top News and Fortune Winner all speedy customers. To that extent it may be best, as with the third event, to look for a back runner as a banker. Successful Years, who should be at big odds, fits the bill as does Precious Bobo. Both have been moving well in their trackwork, especially Successful Years who has slipped down the weights and appears to have come back to himself since joining the useful local trainer Andy Leung, for whom he starts for the first time tomorrow night. Castlepeaktreasure has worked impressively in readiness for the fifth, the concluding leg of the Double Trio which also features the fourth event.