I used to have a regular duty Delhi DMX-44 which was the 40 foot model also rated for 3 sq. ft. All I can say is that while in the broadcast business I knew several professional riggers that stated that the Delhi towers were way under rated. We used several in point-point VHF/UHF STL applications in some rather demanding locations. My own DMX-44 had a Cushcraft A3 at the top, a six element home brew 6m yagi about three feet above it, and an 11 element 2m yagi about 4 feet above that. Here in Nova Scotia we get all kinds of nor'easters and the driver element of the A3 actually broke before the tower suffered any problems. I retired it a couple years ago when I upgraded to a 64 foot Trylon Titan 500. The Delhi was over 30 years old and had served it's purpose well.