We spent a good while camping in Scotland this summer and I spent a good while exploring any loch we ended up near. It was my first time fishing in Scotland. Apart from the stocked stillwaters, my overwhelming experience was fish traditional loch style flies in the traditional manner. (I didn't get much dry fly action - it never stopped raining long enough

)
I tried what works on northern English stillwaters with little or no success.
Traditional wets were what worked for me.
Obviously I know next to nothing about the matter, but I thought it worth mentioning as you will probably be in much the same boat as I was - used to English waters, exploring the lochs for the first time.
Magical place
I envy you.