I bought myself a new Hat Eyes yesterday. I intend to put it on the
back of my Tilley so I can rotate the whole hat to use the magnifier.

The last one I had I lost this way. It was a cold, rainy, day and
apparently bulky clothes and an unused hood of a rain jacket under the
hat combined to pull the magnifier off my hat.

Anybody come up with any clever way to add security to the clip-on
mounting of a Hat Eyes? Or somehow stiffen the mounting on a Tilley
to limit flop?