Someone from the Vintage Model Yacht Group found out about these chaps a couple of years ago. There are some even better videos of them sailing parallel to the beach in a strong on shore breeze and they really zoom along. I will try and find the links and add them to the thread.
We had a few days in Singapore on one of our trips to KL. It was much hotter and humid than KL but a good excuse for stopping for Happy Hour along the river. I did succumb to a Singapore Sling at Raffles, ridiculous price but it may be the only time!