I usually stick to around 5mph over the speed limit unless I need to overtake and to do so safely must get stuck into the go pedal. I guess it's all about where I am, who's around and the time I'm driving. I'm no saint but I won't put anyone including my passengers at risk. Any hooning I do is by myself in no mans land, think Mad Max and you're getting the picture.
I'd be lying if I said I drove within the laws, I wouldn't be driving what I do if I did hahaha, but, there is a time and place to use said power...........nothing like a good skid.