cold water extraction is a bitch. try and do it with tylenol w/ codeine and see where you end up.
as for your smoking, go for it. you'll be fine, whenever i've taken vicodin it didn't do shit for me (smoking wise). the most i've had is 2 m357's at a time though, but i smoked after and it wasn't a noticeable difference.idk if oxycodone is different, find out for us!!