AusBonsai

Is it too late to aggressively prune back my radiata pine? I have nothing to loose-it cost me nothing have not a lot of interest in it?

It's never too late to prune anything. I'd say it is a great time to prune radiata. As long as you leave some needles your radiata should sprout new buds. Sometimes they even sprout lots of new buds from the bare trunk.