Thank you Ridge, but I did write "not till towards the end of the year".
All I can manage at the moment is a very slow plod around the block with walking poles, or to the nearby shops and back. 5 weeks after the op and I still have a lot of pain where I was cut open from ribs to the nether region and I have a bowel problem. Chemo starts in about 3 weeks, 2 weeks on and 1 week off, repeated 4 times, so that won't finish till near the end of October. A big worry is that I will have lowered immunity during this time.
I'll post nearer the time about which boots I'm thinking of buying.