I don't quite understand why people are so reluctant to use carb heat. In this country, carb icing is likely at almost any time of year, in almost any weather. Apart from when you need full power, for example for a go-around, to my knowledge it can't do any harm when used for short periods. And at low power settings carb icing is more likely. So why not use it, just in case? If in doubt, why not use it? What's wrong with putting it on on downwind, and leaving it till 200ft or so on final? Am I missing something here?