The David Ferraris yard could be in for a profitable month judging by the results of yesterday's barrier trials. The South African sent out nine horses spread over three heats and landed the one-two result in each of them. Honest and consistent sprinter Ultra Fantasy set the standard for the morning when he scampered around the 1,050m circuit in the opening heat, scoring by half a length from stablemate Regency Horse (Zac Purton). Manoel Nunes, who surrendered the recent winning ride on Ultra Fantasy to Douglas Whyte because of suspension, was back on board the five-year-old in a leader-dominated affair on the all-weather track. Sir Ernesto, handled by seven-pound claimer Paul Lo Pak-hin, boxed on well for third, albeit at the one pace, two lengths behind Regency Horse. In the second batch, it was Purton's turn on long-striding New Zealand-bred gelding Towering Feeling, who held on to narrowly defeat smart sprinter Bear Macho (Eddie Lai Wai-ming) in a driving finish, with both riders asking for strong efforts from their mounts. Go Brittania, handled by Thomas Yeung Kai-tong, led at a pedestrian pace, but they quickened up appreciably in the final 600m. Towering Feeling followed him and joined him at the 300m, with Lai swooping out wide on Bear Macho. Go Britannia, a New Zealand private purchase by Flying Spur stallion San Luis, is now prepared by Yeung's allocated trainer, Tony Millard. He had six starts for John Moore before he was transferred. He kept on well in the concluding stages without being pressured by Yeung, and was only half a length away in third place. All-weather track specialist Global Win completed a successful morning for Ferraris and Purton by winning the third heat from Class Five stablemate Sinospiel (Lai). Purton had Global Win midfield and wide, but the six-year-old opened up nicely in the final 200m to win by a short head. The pair streeted their rivals, with third-placed Magi Joy battling on at the one pace, four lengths away. Ultra Fantasy's time of 60.8 seconds was the standard, with Global Win clocking 61.2 seconds, while Towering Feeling's heat was the slowest (62). Because of the slow early tempo, Towering Feeling was able to produce the fastest final section of the morning, 22.6 seconds for the last 400m. The final event saw the first public display by Chief Witness, the latest galloper to carry the colours of Archie and Betty da Silva, of Silent Witness fame. Chief Witness, ridden by Felix Coetzee, missed the start by a length and balanced back in the field, but worked to the line nicely under riding in the final 200m. The son of successful stallion Cape Cross will have learned a lot from this workout, with Coetzee giving him plenty of education through pushing him into inside runs, and Chief Witness is bound to have been significantly improved.