I agree with Mostyn! Nothing so rewarding as to catch a fish where no-one dares to cast, often those are the places where most of the fish end up lying in (heavily) fished rivers anyway. We call it "presenting the fly on a hankerchief"... Yes, you lose the odd fly (which is easily recuperated afterwards if you're allowed to wade), but the lessons learned in terms of casting techniques and reading the water are invaluable. Wouldn't go in there with a novice though

, love to take my time facing a multiple problem (how to reach, what to present and when, what tippet size, available length of drift and how to play and land it if you succeed...), sometimes only casting after looking at it for a quarter of an hour. And if all goes well then...nothing beats the feeling!
Johan
PS i wonder if the angler in the picture tried under the bush just beside him first, looks a promising spot to me, too!!