Thanks Steve. It was hoaching round St Andrews Castle so I stopped for about a minute to take 2 or 3 pictures.
Not sure why Dairsie Castle is out of focus. I found my circular polarising filter and I think I should probably put it in the bin. Better results are available using Lightroom.
I never actually went into any of the castles so can't really comment. I did like the aspect of Balgonie Castle as you had to drive through the policy park over cattle grids to get to it. I believe that they do weddings in there but no sign of any nuptials today.
Kellie Castle seemed to have a fair bit going on with a cafe and shop however the cafe is closed Thursday Friday. Some good roads in that corner of Fife though.
I used to work directly opposite Falkland Castle and live about 10 miles away and I have still never been in it

. I think of the castles above that would probably be the best one to visit. Some great walks also available around nearby Falkland Estate.
I had a few others in my satnav to visit but got bored so headed home to process the photos.