The best place to do it is on a level piece of grbutt 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 grbutt, 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.