I have to say that several times that I've been lying awake in the small hours, I've either solved a conundrum or worked out a plan of action that's set me to work in the morn!
The most recent was, after having had a dreadful day when I broke two windows in the tractor using the hedge flail and catching a fence pole (scary incident

) I realised that rather than re-glaze and cover the glass with anti shatter film, it actually would be better to re-glaze in poly-carbonate.
Then the following night it dawned on me that it would be easier to bond the poly-carbonate directly to the cab frame with speciality glue rather than struggle with rubber mouldings, and at the same time I could then increase the thickness to more than the rubber would have accepted.
. . . .both sessions at about 3:30 - 4 am . . . but productive.