Hi Ben,
I fished it twice last year - it is a bonnie spot and is only a short 30 min hike up and over the top from the Glenshee car park. You can do a lap of the loch working from the bank in a summer's afternoon.
On one occasion there was a serious northerly wind, amplified by the howe that the loch sits in. I imagine it is fairly sheltered during southerlies. There were still fish to be caught on wet fly tactics at the head of the wind. The second outing was a calmer summer's eve, with the occasional fish rising amongst the weeds at the eastern end by the hut. Wading is possible, particularly at this end, which might help getting a better angle of attack if it is seriously windy.
Fish were few and far between on both visits, but I did managed one at 14" which I was chuffed with - a mean looking chap with a pronounced kype. I suspect he was a fairly old fish!
I'd be up for coming along if you are needing to go through a Ballater Angling Association member (who have the lease on the loch).
James