sometimes i do. Not every time, though. with my Toro, the hits are very smooth to begin with, so i don't always need ice in there. But i do love a nice icy hit
i like to chill the water in ice for a long time and get the water really cold then put it in my bong.
yep my roor is an ice catcher, it's awesome. i also like to put water in it then let it sit in the fridge for a lil bit. gets the whole thing nice and chilly.