I have seen HUGE shoals of charr in Loch Garry (invernesshire) and some decent shoals in Loch Earn at St Fillans where the hydo overflow comes in.
Caught them in a good few of the highland lochs decribed but not on fly.
Might be worth trying a tiny meepps spinner to locate them first then try the fly rod.
Its very much about being in the right place at the right time.
Friends of mine have had some success in the hill lochs above Lochinver also.

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It is in truth not glory,nor riches, nor honours that we are fighting,but for freedom - for that alone, which no honest man gives up but with his life.(Declaration of Arbroath, 1320)

Our char are sacred,

Loch Calder near Thurso. At a certain time of the year the Char rise to the surface and are easily caught. Got to be there at the right time though.

How exactly were they shoaling? Was it like they came up from the depths to feed at the surface?
I was fishing a lake in Donegal (NW Ireland) ages ago during september/october (I can't remember if I was targeting char or not), but when I was leaving the lake got very calm and alot of fish started rising about 50 or 60 metres form the shore.

For info on char in Ireland, have a look below.
How and Why

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Where the wandering water gushes
From the hills above Glen-Car,
In pools among the rushes
That scarce could bathe a star,
We seek for slumbering trout
And whispering in their ears
Give them unquiet dreams;
Leaning softly out
From ferns that drop their tears
Over the young streams.
Come away, O human child!
To the waters and the wild
With a faery, hand in hand,
For the world's more full of weeping than you can understand.

Caught a few on a wingless Wickhams Fancy fished deep on the Fionn Loch at the base of Sulivan near Lochinver, NW Scotland

Plodger.

The one that could cause a 'border incident' is Lough Fad which famously only holds charr. Not far from Quigley's Point, NE of Londondery, but although inside the ROI border it is administered by Foyle Area Fisheries which means a NI licence is valid. Well this is how I interpret Peter 0'Reilly's 'Loughs of Ireland' book. Otherwise free fishing - May and June best.


No need to stray over the border though as 3.5 miles of Lough Melvin is within the UK and holds charr. Garrison best for boats on this border lough. Melvin famous for its Ferox, which feed on the charr, as well as gillaroo and other unique trout sub-species left by the Ice Age.

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Save the softmouth trout