The WLAC is a "White Lightning." Quite a fast machine when equipped with the right engine. When photo was taken it was Vic registered so not sure why it was in Cooly.
The Optica's belongs to Peter Waterhouse from memory. Not many of those around either. The story goes that he was offered big money for them years ago by the factory because they stopped making them and because he owns them they have to keep supporting the aircraft in terms of parts etc, as part of some English law / agreement. The result is that they are apparently worth a hell of a lot of money.
They are quite a noisy machine when airborne too.