I did once log a non-flight a while back, under the assumption that I intended to fly, but rejected due to rough running during the mag checks. However I had 99 hrs 55 mins after my last flight, so I logged 5 mins to get 100 hrs. I had missed a few flights due to the weather, and wanted that figure - pure vanity I dare say!
My club charges brakes off to brakes on, although they probably didnt really like me adding that to the tech log.
When did they drop the intention to fly bit?