No Darky haven't got anything at all re harness racing, never looked at it or dogs either for that matter.
The Vic Dog spotplay plan sounds good, did it perform in other states too?

A bit off topic but re the 'Optimist', I used to get that mag years ago but stopped. Anyway before he died I spoke once on the phone to the late Ian Barnes of Punters Choice about another matter and he reckoned that some of the Optimist's ideas and plans in his "Plan of the Month" articles were as good as a lot of commercial systems.