During a hike in the Mols Mountains National Park (Denmark), I discovered a kitesurfing spot at the Ahl beach. One surfer was doing tricks near the coast, so I went for an action shot. However, I did two major mistakes. First, for whatever reason, I didn't activate the burst mode. Second, I didn't check the photos I took well enough, thinking I've got the shot. Long story short: most of the pictures were out-of-focus. Another lesson learned the hard way.