ASTONISH put the Lawrie Fownes camp on a high with an impressive debut win on Saturday and the way Super Fit worked yesterday there could well be more big-race victories in the pipeline. The Remy XO Cup winner looked most unlucky last time out in the race won by stablemate Nitrogen as he was all but knocked over in a chain reaction on the bottom bend initiated by Champman River and Mastermind brushing together. Super Fit was sat back on his heels and went from travelling sweetly just off the pace to being left flat-footed out the back door. Yet he picked up and was finishing all over the top of them at the line to just miss a place under Alan Munro. He's always been a good worker but the way he flowed to the post was exceptional, even by his standards. K.H. ''Little'' Hung has been enjoying an Indian summer to his riding career with the likes of Thunder Bolt, a 37-1 scorer at Sha Tin recently, spurring him on. Yesterday Thunder Bolt looked in top form and, having won in Class Three when pushed up to a mile, could well do something again the way he is working. He should also stay 1,800 metres. Those looking for a horse with a bit of scope for improvement could do worse than John Moore's Trustwell who yesterday seemed to accelerate better than stablemate Cheguei at the end of their work. Trustwell probably found 1,400 metres on the equitrack too sharp last time but could do something over a greater distance on grass. There was also a good piece from Geoff Lane's Global King who, for some inexplicable reason hasn't figured at all on either of his last two runs. These were very eye-catching efforts and yesterday he was not troubled to pick up Winning Colors in a solid hit out. David Hill's pair of L'Enjoleur and Fat City looked cherry ripe in a solid double-round piece while Wong Tang-ping's Prince Baikal could well be adding to his hat-trick of wins. He appeared spot on when cantering, looking better than at any time this season. Neville Begg's dual winner, Chiu Chow Warrior, also looked fabulously well while there could be a win in Peter Tse Yan-sid's Financial Fortune. Last time out he badly needed the run, his first of the season, but he is picking up all the time at the track and could just do something at big odds a couple of runs down the line. There were also three trials on the all-weather track during a busy morning at Sha Tin. The third heat was by far the most imformative with a good win from Patrick Biancone's first-season recruit Cheer On who looks to have trained well since his debut third to Fighting Strike. The first and second heats saw a double for Derek Cruz. A modest first heat went to Gijima on whom Tony Cruz was teaming up with his brother. David Oughton's last-start winner, Figure It Out, was always outpaced in this event but still showed enough to suggest he can win another Class Six event but over as far as he can be found. In the second, habitual good worker Gints To Win scorched away from his field though he is by no means one to rely on come race days.