Not so good, so so. Go in seasons with plenty of water, perhaps the rapid currents will be more interesting.
I have been there twice. Unlike the current rafting, it takes up to half an hour to complete the drift. It takes about 6 hours to drift. One of them has lunch. The scenery is very good.
It is a pity that there is no Kowloon Eighteen Beaches. I don't know what the relevant departments think. If this tourist attraction can be restored, the local economy can be boosted.