John Size had two big guns from the stable entered in the Sha Tin all-weather trials yesterday where the signs were highly positive for exciting Australian import Grand Zulu. The talented galloper won the second heat in commanding style, after settling slightly worse than midfield in the first half of the 1,200 metres heat. Douglas Whyte angled him into the clear in the final 300 metres, and in the final furlong rode him along gently. The response was as good as it was immediate. Interestingly, Grand Zulu did not have the blinkers applied in this trial, and he clearly went a good deal better without them. The surprising factor was he showed a little more early zest without the gear - the opposite of what you would normally expect. In any case, it was markedly better from Grand Zulu and the signs are ominous for his rivals in the premier grade. In the same heat, David Hayes-trained Lucky Winner went to the line rather well, with Gerald Mosse taking the shortest route home along the rails. It was certainly a better piece of work than when he competed in a trial at the beginning of last month and he is headed in the right direction. Speedster Billet Express led them along at a solid clip in the opening heat, making every post a winner and clocking a winning time of 1:10.9. He is working as well as ever and leaves the impression his winning turn is far from over. However, Size's Super Kid was every bit as impressive in finishing second, albeit six lengths away. Super Kid was given an easy time but hit the line full of running and has come out of the Cathay Pacific Hong Kong Vase in very good order. Meanwhile, in other work, Manfred Ma Ka-leung's Successive Gains caught the eye in a solid piece of work on the riverside on Thursday. He has never really been one to impress in work but there was plenty to like about this exhibition. Whyte settled him behind work partner Diamond Era in the early stages of the 800 metres gallop, and then allowed him to stretch out without really applying too much pressure at any stage. Successive Gains is entered to run next week over the Valley mile, which would normally be a fraction shorter than he would like. However, he displayed enough zest in this piece of work to suggest a good run can be expected. The progress that African Forest has made in his work since joining David Hall is well worth noting. He confirmed some promising pieces of work with a nice performance in an all-weather trial earlier this week. He is yet to win locally but has shown enough potential to change that in the short term. Hall's Turf Gold also moved well in his turf trial earlier this week. He was given some time off after his last run in mid-November but has come back this preparation working every bit as well. He showed good early speed in his trial, before being eased out of contention in the final furlong. He looks in sensation order and it shouldn't be too long before he breaks through and wins. ONES TO NOTE: Grand Zulu, Super Kid, Turf Gold.