DaveB wrote

what are boots?

They are those things you put on your feet when it is cold and wet outside.

g

Sorry, but I couldn't resist!

Really, they are on some planes, usually midsized to smaller sizes that have
ice protection. They are a rubber skin that sits tightly on the leading
edge of the wing, and back over the top a ways. When ice builds up, they
are inflated with air, either manually, or automatically, and the ice cracks
and blows away.

Ice building up on the front and front top of the wing has a larger
detrimental effect on an airfoil than other places on the wing, but it isn't
good, anywhere. The heat referred to was the heat on the probe that
measures airspeed, and possibly on a few other places, like windshield and
propeller.

Google deicing boots.
--
Jim in NC