Well if my wife saw that it would be the end of shooting at home, so quickly worked out what to do, JB weld has a product called plastic putty, its an epoxy putty you work together with your fingers and it starts to set in 30 mins, Initial cure is 3 hours and totally solid overnight.
managed to hide it yesterday and today sanded it back and painted it and it worked great, and you cant tell there was ever really a hole there.
So the moral of the story is take extra care shooting out of windows, and if you do mess up JB weld plastic putty is pretty good stuff, lol.