A ScubaBoard Staff Message...
This information can save your life!
A compromise might be a patch on either the top of a hood, too of the wing or wetsuit shoulders...Does anyone know what kind of DSMB Cameron has? A buoy with SOLAS (Safety Of Life At Sea) Radar reflective tape would dramatically extend the range he could be detected -- providing people know to monitor their Radar. @Captain Tim and I did some tests on the DAN 6' Signaling Sausage. To my great surprise, he could easily spot it at over 5 miles/8 KM on his radar aboard a 42' Newton.
Unfortunately they are bulkier than most of us like to carry; a compromise I am considering at this moment.
The signature from those locations would be much smaller, as I assume it's related to reflective area and height above waves.
In this thought line: Marine Myth Buster: Can sun-reflective tapes also reflect ship’s radar? - Practical Sailor Print Edition Article
Aside from the click bait title, the information is boiled down and simple.