Lost a fly rod in a Canadian lake but went back and found it. I had stopped fly casting and decided to troll the fly as I rowed a half mile to the other end of the lake. Never saw when the rod went over, clear tea water mostly about 15 feet deep. I went back the next day with free diving gear planning to search the length of the lake on the path I rowed and found it on my first breath of air.
Pulled up a custom rod and reel from the Kenai years ago, pristine condition obviously only in the water a few hours. Caught a ton or two of fish on that sweet rod before it eventually broke trying to horse a big river salmon from shore, and I still use the Daiwa SeaLine reel.