Has anyone used this type of skylight cover?

We've got a huge skylight that would probably be great in California, but in sweltering central Alabama? Not so much. I believe if I were to place some balls of dough just so on the countertop, I could come home at night to tasty chocolate chip cookies! We're looking for a way to block heat and light. We haven't climbed up to get the exact measurements, but there are two banks of five roughly 3' x 5' domes, one bank on either side of the central beam. We're talking roughly 10' x 17' of total area. Did I mention it was 95.5 in the shade at 6pm yesterday?

I'm afraid that trying to install shades inside would be ungainly and unattractive. Another option is some sort of film, and I have yet to explore that fully. I also don't know how the film will work on the curved domes.

So, I came across these, which I have been calling "skylight cozies."

The testimonials read well, and they seem to be easy to install and pull off (may want them off in the winter, when the sun could help warm the place up). Do any of you have any experience with these, or with something like them?

Thanks so much!