In 2015 – 2016 my roof was featured by a Hygain AV-620, reaching multiple meters over the house. But the antenna proved to be the bad buy of the century: HF performance was top, but mechanical construction was dramatic. For an antenna of that size and wind load the construction was rather flimsy. This became clear when the first storm in the autumn of 2015 bent the antenna over. Despite the attached guy wires the antenna bent over that much that it was kept in its unnatural position by the same wires.
This issue was resolved by mounting the wires in a wider angle (as far as the border of my garden allowed), but this still wasn’t enough. During some heavy winter storms in 2015 the antenna was rattling loud at the roof. After some time I saw the entire construction got twisted over the length of the antenna. So in June 2016 I’ve decided to lower the mast and dismantle the antenna. At that moment I found out that some spacers of the antenna had snapped. Obviously this antenna is unable to stand the specified wind speed of 128 km/h without falling apart.