Sun sights during cloudy weather

[CarlosPindle]

The clouds aren't always cooperative when taking shots of the Sun.  The Sun partially peeking through an overcast sky can often be useful when using the correct filter.  What I mean is the Sun often appears as though you're viewing it through fog.

How cloudy of a day has it been when you made a successful shot of the Sun?

Is there and infrared detecting sextant?

Carlos