SIXTEEN counsellors trying to encourage 1,100 Vietnamese at the Whitehead detention centre to take voluntary repatriation have received only four 'maybes' from detainees - a trend the United Nations fears will continue. The failure to convince people to go home follows similar results with Vietnamese in the High Island and Tai A Chau camps. The Hong Kong office of the United Nations High Commissioner for Refugees (UNHCR) confirmed a recent visit to Whitehead had been largely unsuccessful as boat people refused to even discuss repatriation. The 1,100 the officials were targeting had been cleared by Hanoi for return either voluntarily with the UNHCR or on the Government deportation programme. About 2,500 have been cleared for return, but the chances of being deported on the Government's infrequent and controversial flights are slim. The next flight is not scheduled until December. A spokesman for the UNHCR said people were refusing to agree to voluntary repatriation until they knew the outcome of talks between Washington and Hanoi officials on a United States plan for mass resettlement. Under the 'Track Two' plan, people would return to Vietnam and be screened by US officials to determine their eligibility for resettlement in America. 'A few people asked questions about volunteering but no one was definite. The best our counsellors could get was four 'maybes',' the spokesman said. Senior US and Vietnamese representatives met in Hanoi last week to discuss the issue for the first time, but it is understood little progress was made. About 21,000 Vietnamese boat people remain in Hong Kong.