The best place to do it is on a level piece of grass or dirt (with no
tree branches in range of the cooking area) as opposed to doing it on
concrete, since the oil is going to go everywhere. Wear an old set of
clothes, since you're going to get oil all over you in the process. If
you do it on concrete or grass, put some cardboard down on the concrete
before setting the rig on it; at least a five by five foot square with
the rig centered in the middle should catch most of the oil. Do it
as far from the house as you can, and you have to stay out there at all
times and watch the rig to make sure no small children or pets get near
it; if you have any outdoor pets be sure to leash them or put them
indoors while you fry the turkey, and keep them away from the rig once
the turkey is done as the oil will still be very hot and will take
12-18 hours to cool completely. If you do it on concrete and get oil
all over the concrete you should be able to clean the mess up with dawn
dish detergent and a scrub brush and lots of hot water.