A very emotive report, Paul. Your enthusiam certainly came through!
Mate, there is no cheating with what you've used! If you've got it, use it,
.
Dew, dew, dew! I've been thinking about what I can do about it. My last sketch went for three hours, and I certainly had images of my pad turning into wet loo paper,
.
What helped me first was holding the pad/clip-board you are sketcing on, as upright as possible. This helped me a lot.
I'm now considering how to fashion a little "sketching hood". I'll keep you posted on my progress.