CHAMPION jockey Geoff Allendorf took his seasonal tally to 52 winners yesterday with a double at the first two-surface meeting to be held at Macau. ''I aim to ride one winner per meeting,'' said the Taipa supremo, ''and I'd like to be on 55 in the end.'' That would leave him two dozen clear of the rest, a tribute to his skill and determination. The first leg of the double came with a very easy two-and-a-half length win on the young favourite Claude Charlet-trained Bronze Venture in race five and there may be a lot more to come from that individual. Then Florence Mills' old timer Comanche Chief completed the double in the next race. Both the winners were on the grass track half of the meeting - the first four were on the inner sand track. The grass also brought success for departing Johnny Roe when he brought home Bernard's Choice, and for Chinese trainer Henry Lee who's Coronation Park held off the late challenge of Keith Stone's Kwong Fai, to win the last race. A betting turnover of $16.2 million added to Wednesday night's $15.3 million provided a welcome boost to the end-of-term coffers.