I had the area above my head in the cockpit tinted about two years ago with Lucar film. It has held up perfectly despite naysayers. As a result,I have a much cooler cockpit and the sun is not baking me ! I am also able to see thru it in order to look for other aircraft while manuevering in the pattern,tail chase,formation,etc. It has worked out well.
Just an update.
Dick