Years ago I did this on my Dom and on other boards before. It was as a result of the McKee quads where he believed that the fins should be set up like a race car - with the big wheels at the back. I found it ok in bigger surf but otherwise a bit tracky. I was using PC 5 side rears and pc3 side fronts. Then I started using PC5 side fronts and PC2 side rears which I left in for about a year.