If you put in a wood fence, use cedar and raise it about the width of a 2x4 off the ground. I did this on a cedar fence about 10 years ago and the fence is still up and looking good and there is no ground rot. Use a pressure treated post set in concrete to hold the fencing up and in a few seasons of sun fade you cannot tell the difference. That 1 1/2 inch space under the fence makes for good weed eating clearance and lets the wind slide under the fence, Not long after I and a neighbor both put up fences, the neighbors fence got blown down, mine stayed up and is still up and I believe that 1 1/2 inch ground clearance makes a difference during wind storm.