Fun thread that I had not seen before. I can add one: Problem caused by distraction (to top it off, the distraction was caused by anticipation of a problem that never even occurred).
Place was Lake Powell. This was my first real trip with the 22, and docking it is not easy for me as it's (for me) an "odd" combination of things that were different for me on other boats, that, put together, are tricky for me. For example:
Tiller steered outboard? Grew up with one and it feels like an extension of my arm.
Wheel? No problem, been driving cars for years.
Levers for throttle and transmission? Fine, had them on bigger, single-screw boats... but I'm used to them being separate levers (so when I want to speed up in reverse I push the lever forward like I'm used to...)
Putting the above all together in the same boat is proving to be a challenge for the old motor memory (and the mental visualization/understanding what I need to do as well, which for me is actually the main thing). Anyway, on this day a sub-group of the Powell CBGT gang was heading into Dangling Rope marina for re-supply. I'd been in there a few times before, so knew in general what to expect. There is a breakwater of sorts that you round (between it and shore) on the way in to the docking area. Was I focused on the task at hand? NooOOOooo. I was worrying in advance about docking the boat with an "audience" of experienced C-Brats. Bad move!
There is an unmarked ledge to starboard as you head around the breakwater. Well, there IS an orange ball there, but it marks the termination of a rope/anchor and not the ledge which is nearby but not under the ball. Not that that's much of an excuse. Naturally (and preoccupied), I swung a bit wide and ran right up on the ledge

I felt like a total idiot as it was clearly visible in the sunlight, and plus I knew it was there from before. Jeeze! Luckily I was only going about 1-2 knots, and was easily able to back off (later I checked and it only put a whisper of a mark into the gelcoat... whew). To top it off, I actually glided *perfectly* into the slip (once I got there), but... no-one was watching anyway :roll:
I thus named it "Bonehead Ledge." I have managed to keep away from it on several subsequent visits, and now it serves as a reminder to focus on the task at hand, not possible future vanity/embarrassment. But..... stupid!