I’m sure that’s sound advice, and from personal experience I extend it to “if in any doubt, don’t go on the hills”
I had a really scarey moment which luckily turned out OK. With hindsight, I was unduly influenced by the thought that I had driven two hours to get there and didn’t want to miss the opportunity. Silly, but lesson learnt!
Still good to know what to do for the best if you are caught out.