Thanks very much folks.
@karl - I only thought of leaving the fly in my pack due to laziness really and also saving a bit of time, but it worked out well. We have slimmed down the routes a lot on joint trips, but these long distances are possible for me on a solo trip for easy routes with no major ascents and long daylight hours.
@richard - it's a Big Agnes Copper Spur UL1. We're well accustomed to birdsong in the early hours, usually grouse, skylark and curlew, but that sudden screech of the owl was blood-curdling!.
@astaman - I think Perthshire is usually overlooked, there is always a bigger draw elsewhere in Scotland. My route files and notes have been sitting in a directory for ages here.
@sunnydale - always good scenery and quite varied overall, an enjoyable circuit.
@Warbler - yes great views northwards, I just caught the last patches of snow.