does it make a difference if the d.o. has legs or not for camp fire cooking? i have a 5 qt that does not have legs and i want to cook with it on memorial day weekend at the lake, any tips? also i found an old skillet that looks like is has some mild rust, it's just a dark dark clay color. do i need to get rid of it before i cook with it? if so is there a good way to do it other than dutch's electo method?