boat securing straps
https://strapinnoretractablehaven.valoradigest.com/posts/why-strapinno-retractable-straps-are-a-smart-choice-for-secure-cargo
Those boat securing straps, often called transom straps, are the unsung heroes of a stress-free tow. They cross over the outboard motor's shaft and hook onto the trailer's rear, locking the engine in place and preventing it from kicking up during a sudden stop or bumpy ride. Without them, you're just hoping the weight of the motor keeps it down, which is a gamble no one should take on the highway.