I was on a boat today on a large lake trying to catch fish. (We caught none, btw. I think we got there too late and the day was too HOT for the fish to be really active.)
As we went quickly from one point to another, one of the two straps near the front to secure the canopy would vibrate in the wind. It was JUS tight enough and had NO twists in it when I secured it to the hull. The other one on the other side was a bit slack, had 1-2 twists, and did NOT vibrate. I was reminded of the Tacoma Narrows Bridge collapse.
The 1940 Tacoma Narrows Bridge, the first Tacoma Narrows Bridge, was a suspension bridge in the U.S. state of Washington that spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7 the same year.[1] The bridge's collapse has been described as "spectacular" and in subsequent decades "has attracted the attention of engineers, physicists, and mathematicians".[2]
Construction began in September 1938. From the time the deck was built, it began to move vertically in windy conditions, so construction workers nicknamed the bridge Galloping Gertie. The motion continued after the bridge opened to the public, despite several damping measures. The bridge's main span finally collapsed in 40-mile-per-hour (64 km/h) winds on the morning of November 7, 1940, as the deck oscillated in an alternating twisting motion that gradually increased in amplitude until the deck tore apart.
https://en.wikipedia.org/wiki/Tacoma_Narrows_Bridge_(1940)