Been there done that with the hypoglycemia on a pointer, mine would seizure though, he became unhuntable at age 7. Curious to know if your dog was Elhew type pointer, mine was a grandson of Elhew upland gilly,he by Elhew Blue Nose by Elhew Snakefoot. Sorry for the loss ,but as you suggest he went out doing what he loved, safe to say you didn't get cheated any lots of pointers don't make 9.