I've read numerous owner comments stating the top section of the iMax 2000 top section makes them nervous seeing it bend in high winds. I slipped a 4' section of 1/2" thinwall PVC pipe over the top section and held everything in place using hot-melt Gorilla Glue brand poured in & around both ends of the PVC tubing. It's very similar in strength to what is used on the iMax elsewhere. It still flexes but not as wildly as without it and there appears to be no undue stress placed on the other two antenna sections. I did a somewhat unscientific test on a gusty day by temporarily standing/anchoring the antenna against my house and taking measurements at the tip of the top section with & w/o the PVC tubing in place. There's about a 50% reduction in top section flex when control points were marked & measured repeatedly. The 4' section of PVC is painted white to match the antenna.