Oh, the Lazy Factor
But that's easier to overcome than the WAF (Wife Approval Factor)... I like the "I'm so lazy I don't want to go faster" attitude. I can see it as an excuse for engine off coasting: "My engine is so lazy it doesn't want to idle".
So, since you keep your speed down, how do other drivers react? I try to keep my speed less than 10km/h above the legal limit, which (as you know) is very slow by Polish standards, and drivers make sure I know about that
As for the engine blanket you should be cautious, since a gasser runs hotter than a diesel. Of course, when hypermiling (pulse & glide, EO(ff)C, engine braking, etc.) your efficiency rises, so
engine temperatures may slightly drop. The engine blanket does keep the engine warmer after parking the car, though.