Not-so-hypothetical question: If I were to fly out sometime in the next couple of weeks for an overnight trip, would I need to preheat the plane for a mid to late day departure? Let's say that the overnight temperatures were in the low to mid 20s and the daytime temps in the high 30s to mid 40s. With a limited payload, I would rather not deal with bringing along the heater - but I don't want to be foolish, either.
On that note, any words of wisdom on a lightweight, efficient engine heater for a Cub? I've got access to an older system that we used with a 172 for years, but it is bulky and heavy.