Definitely a technique to look into for a gloss.
It's been around for a while, but there is a lot of misinformation
about the technique. The video pretty much explains it perfectly.
What you want to see sometime is a crew doing roll and tip on a larger
boat. I saw a Luhrs painted with six guys from New York - it's all
they do is roll and tip hull painting. One guy did the rolling,
another the tipping and they just zipped along - painted a 40 footer
in about two hours and when all was said and done, sanded and ready to
relaunch, you'd swear the hull was brand new.
When we had our kitchen redone, I painted the walls using that
technique and the gloss was amazing.
Works in dining rooms, too.