I've been saved from launching without a plug by someone else standing at a ramp.
I also cracked the hull of my old seacraft the first time I used a powerwinch. I'm still not sure how. The boat went straight up the back of the trailer, then leveraged down and collapsed the hull both sides at the first lifting strake. Paid a $1000 to have it fixed, draged it home, got it snug in the driveway, then backed my wife's minivan ( which I'd moved to position the boat) into a tree (goodbye another $1500).
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