I don't know if you've included "NANCY" on raw 2010 PacCup, but here goes:
1. Loss of compass light (it was a TackTick digital solar compass). What we discovered was the light was set for Pst and not other time zones, so it went off while it was still dark - really dark. Borrowed compass/no instructions. Pointing a light directly at it flooded out the digits, The compass was mounted on the main hatch slide, so one of us sat next to the bulkhead and shined a small light into the side of the compass face, sort of illuminating the thing. Night after night. Battery after battery. Sore arm after sore arm. And angry complaint after angry complaint from the guy on the tiller if we were jolted by a wave and it got into his eyes.
2. Running into trash - fishing lines/nets several times - always at 0200. Pushing the trash off the rudder and backing the boat down under sail to clear the keel. Once the boat stopped to abruptly we thought we'd hit something hard and spent the first few minutes checking fork damage/leaks, It took half an hour, and in a race we eked out a 15 minute victory possibly could have cost us 1st Place in our division.