Trying everything to catch a trout - and failing miserably.

This loch contains a head of wild brown trout and, for reasons best known unto themselves, they are rather more loath to leave it than the trout in many of the other lochs in the area. Despite this I gave it my best shot at catching a trout and I tried wet flies, fast sinking lines, shouting personal abuse, and a range of other tactics all to no avail.