If you’re here at the right time, you may get to see several people ‘messing about with boats’ among the pylons in the nearby water. The good thing about being here then is that you’ll have a plausible reason for standing around at the side of the road—you’re there to watch the RC model boat races. The bad thing about being there then is that it will be close to impossible to find and retrieve the cache, sign the log, and replace it without being muggled.
At other times, though, it’ll be just you in this exposed space, just you, and the passing muggles on the road. Fortunately, there aren’t many hiding places for a cache in the area, either, and you should be able to log a QEF.
NOTE: The cache is NOT hidden in the concrete box with a wooden lid, located near the coördinates. Please do not disturb this box.
The container is a tiny knurled brass tube, containing only a log strip. BYOP. Reclose carefully; it's easy to cross-thread the lids on these. Tightening gently, and only until it's snug.
Please take care that the container is hanging below the ring when re-hiding.