A few years ago I bought a second hand MonstIR yagi made by SteppIR. Its 3 elements on 40M (and about 72 feet wide) and had 4 elelments on 20M -10M (and is 30 feet long). It weights 120Kg and unfortunately was too heavy for my tower.
Fast forward a few years and I bought a One Man Tower (OMT) which was solid enough to support the MonstIR, a bit of digging and 5 cubic metres of concrete later the tower was up.
With the addition of some 6mm stainless steel cable, a new Noble braked winch, a BIGRAK rotator ad come controll cables, the MonsIT was in the air.