A good archery hunter should be able to spot and stalk a decent buck and if you are disciplined then you should have a good chance, but coues are definitely much harder than desert muleys IMO! They are less habitual, not easy to pattern, and very unpredictable and skittish as mentioned. Depending on the terrain, they seemingly vanish, hence why many refer to them as the grey ghost!
If you haven't heard of the book or author, the comments simply give away that you are a newbie coues hunter. I may speak for myself and my close coues hunting buddies, but you might have years of close/blown experiences to come as many of us have under our belts! I feel even the best coues hunters need a bit of luck to bag a good archery buck. Good luck, let us know how you do!