Hope you father get better soon. My dad was diagnosed with colon cancer about 15 years ago and after all the chemo and radiation he has been in remission ever since and had no more problems from the cancer. If you dont mind me asking, how old is your father?
"Unless one can enjoy himself fishing with the fly, even when his efforts are unrewarded, he loses much real pleasure. More than half the intense enjoyment of fly-fishing is derived from the beautiful surroundings, the satisfaction felt from being in the open air, the new lease of life secured thereby, and the many, many pleasant recollections of all one has seen, heard and done." - Charles F. Orvis