Fixing our flat tire
Sailboats don't have tires, but our equivalent is our genoa. Our forward most (and largest) sail provides most of our power when we're moving, so when it rips it's a big deal. It weighs about 250 lbs and is obviously quite awkward to take down and put up, being the height of a 6 story building.
So we were quite disappointed when ours started ripping during a period of time where the wind never went below 15 knots. So, we decided to "just do it". Quite a few hours later (and lots of profanity later), Kirstin finished re-sewing our sail and we put it back up. After this effort we went to bed early and slept for 11 hours, totally exhausted.
Of course, right after we raised the sail in howling winds, the wind dropped to 5 knots........Neptune having more fun with us.