Just before I went to bed, Minnie decided to join him on the roof, only hubby saw her heading for the window. She landed on the roof, slipped a bit, but was able to turn around and jump back to the window. About 4:30 I heard an almighty slipping and sliding an scrambling, and cashing. George slid down the roof, the gutter stopped him, judging by the skid marks on the roof, and I got to the bathroom just as he managed to get to the window which I helped him through.
I don't think he will be going out there again in a hurry.
After reading your ideas, My idea for the morning was to try and hire a ladder to reach the apex of the roof. But today is a public holiday, so didn't like my chances of getting one.