The Spraymax 2K cans of auto clear are an awesome product, however the extreme environmental requirements make it difficult for a casual restorer: see Pinside Link
As an alternative, I have purchased a can of "Clear Diamond Finish" amazon.com link »
The spray stuff has a bunch of aerosols that make it tricky to use safely so I thought I would try the liquid. It seems people have had different results with various application styles so it was time for an experiment.
I tried 3 different application methods: roller, brush and squirt bottle. I filmed it so you can see the application and how they went.
After 24 hours of drying they were dry to the touch but I could still dent with a fingernail. My results came out decent.
To sum up: Both the roller and brush method gave good results, good enough that they could be sanded and polished for a playfield. But it was a thick coat. The spray did not work well, however the cheap sprayer did not handle the thicker fluid and did not "mist" as it does with water, so the spray force was too high resulting in bubbles. It probable that a decent sprayer that resulted in a mist would give a decent coat.
The results look good enough I will be trying this on my Target Pool playfield.