WE hear that the thwack of wood against leather during the Hong Kong International Cricket Sixes will echo far beyond the boundaries of the Kowloon Cricket Club (KCC) this year. Two BBC directors flew in this week to look at the possibilities of broadcasting Hong Kong's mini cricket tournament to the rest of the world. After a reconnaissance visit to the KCC, and an evening cruise talking to sponsors Wharf Holdings and Cathay Pacific on Wharf's Pacific Princess, Laurie Ward, executive producer for the BBC Rugby Sevens coverage, and BBC cricket expert Simon Wheeler were''very excited'' about the project. ''We propose making two one-hour programmes which we will broadcast the following week,'' Laurie told us. The programmes would be transmitted to about 60 countries. According to the executive director of Cricket World International, Brian Catton: ''We're looking forward to signing the contract. It shows that the Sixes are successful if the BBC is interested.'' Last year the event was covered only in local news items and in an ATV documentary shown a few weeks later. All the tickets for the Sunday matches, as well as 80 per cent of the Saturday tickets, were sold last year. Many top cricketers - including Ravi Shastri, Arjuna Ranatunga and Graham Gooch (who will captain England in the Sixes) - will be competing for the golden cricket bat, which is Cricket World International director Papu Butani's $700,000 prize. Organisers believe that the 4,300 seats will be sold out well before the games start on October 1. This will be the last chance for fans to see the Sixes at the homely KCC before it moves over to the Hong Kong Stadium next year. But, after visiting the new stadium yesterday, Laurie Ward had one serious reservation. ''The stadium looks good but all of the sponsors' boxes have glass in them - and if the players hit a lot of sixes, there are very good odds that something will get smashed,'' he observed.