Good stuff guys. Thanks for all the info. I may look into making a shield just to keep me from staring into the glow cup. BUT wearing some UVA/UVB glasses will be my primary line of defense. I wear them all the time on open water. I'll just be more diligent about wearing them on the hard water too.
I know we have safety glasses at work that are clear lenses and are advertised do the UVA/UVB thing, so those might be good for when you're in the shanty. (Just don't tell my work that a pair might go home with me! lol) Lastly, I won't leave the glow cup on unless I'm using a glow jig and charging it.
- Jim