I tried heating it up on the stove. It melted nicely, and I figured it would glide on smoothly. But the instant I touched the foam pad to the liquid wax, the foam disintegrated. Me being me, I still tried to smear it on. Bad idea, as it just left a lumpy streak that turned rock hard. I had to ski it off.
SO, not a great idea, but you can avoid a similar fate.