Track Master, the new all-weather dirt surface, is already proving to be one of the success stories of recent years as evidenced by seven trials on it yesterday morning with the Gary Ng-trained Dolphin taking centre stage. The Jockey Club's racing department, in stark contrast to its slavish devotion to the increasingly discredited sandmesh surface, has sought far and wide for the ideal work track. After experimenting with a number of different types it is tempting to say they have now found one which is ideally suited to the territory. A total of 38,700 square metres had to be laid. A number of sand deposit samples from China had to be tested to isolate the correct range of particle size with sand from Jio Jiang in Guangdong and bark chip from Doumen in Guangdong and Zhui Guan in Guangxi eventually proving to be ideal. The material then had to be shipped for six hours to a mixing yard in Doumen and then shipped again to Hong Kong where it was transferred into barges at Junk Bay before arriving at Sha Tin. It then took 1,930 trips by lorry to deposit the future Track Master surface adjacent to the track and some 350 lorry trips to remove the old surface to Beas River. But all the hard work has paid off handsomely and, even at this embryonic stage, it is tempting to say that Sha Tin boasts one of the finest all-weather surfaces to be found anywhere. Dolphin certainly seemed to enjoy himself on it. He was eased right back to the rear of his field by the South African jockey Douglas White in the fifth heat won by the brilliant worker, Belarus. Generally there already appears to be a front-running bias in the sprints on the dirt and very few were able to make up ground from the rear of their trials yesterday. Dolphin was able to defeat the pattern to the morning's session and did so with some aplomb, cruising home down the centre of the track to run third. David Hill's Sweet Win did well to finish sixth in this heat in which Belarus made all. John Moore seems to be asking much more of his team at this stage compared to at the same time in previous seasons when he has been a slow starter. Yesterday his Super Bomb went well in the first trial in which Dolphin's stablemate, Sure Win King, also caught the eye. Wong Tang-ping's unbeaten griffin from last season, Chop-Chop, was a strong winner of the second heat, clocking the fastest final quarter in the process. Chop-Chop knuckles down well to the job and looks the type to train on well. Moore's Marshal Order won the third heat but proved to be a trackwork deceiver last term. He'd work brilliantly in the mornings but find little under the more intense pressure of race days. Profit Taker streaked clear for a six-length win in the fourth trial. This may prove to be his surface as he has struggled to hit the line on the sandmesh for sometime. Ping's Each Own Way trialled well again in the sixth heat won by Super Falcon and should go well early doors. And Moore's Ever Triumph ran down a modest bunch in the final batch. In other work prior to the trials, there was a very solid piece from Hill's Indian Chetak, who did well to keep tabs on Top-Worth. Indian Chetak has done a stack of work and should be thereabouts when first produced. American Way went pleasingly for David Oughton and is set to continue the improvement he showed last campaign. There appeared to be an improved piece from Lawrie Fownes' Metro Express, who was far too good for Money Come-In, while Solid Gold, now with Alex Wong Siu-tan, impressed against Knight Commander, as did Wong's Lik Rambo.