I can only give a very basic version Tim, but Oscar and others could give a better description. The Skyfox was based on the Kitfox but was modified a fair bit be certified in the 101-55 category. It was strengthened in places from memory. I should know more as the factory was only a couple of hangars down from Skyfox Flight training where I used to fly many years ago. It was 17 years ago and my memory is unfortunately lacking.
Rob Kerr would know a lot about them as he built them I think from memory.