Adam,
Great shots - I'd love to hear what your setup is for guiding as I'm facing a similar issue and challenge.
I got caught out last night - when I got home it looked like it was clouding over and so decided not to set up the scope. Guess what, when I checked later in the night it was beautiful and clear!!
No need to thank me for the clear sky you had to take these images...
Cheers,
Mario