How do you manage to use a raincover around a bulky CCF pad that is strapped either on the bottom or top of your pack. I have a Zlite folding pad that I strap to the top of my ULA circuit but cant get the raincover over the zlite and the pack.

It's a problem with a pack that won't hold all your gear inside. Either a bigger rain cover or attach the pad outside the rain cover. Or use a rain liner.

I don't. Closed cell foam doesn't absorb water to begin with and if it's wet when I make camp it simply goes on the outside of the groundsheet/bivy bottom/tent floor.