Pretty cool video of one person as they paint the inside of a boat. Very cool visual for those of us who learn by seeing. Thanks for posting it on YouTube. Check out the video and then his channel on YouTube. Subscribe to the channel because there are a bunch more useful videos/tutorials for you to check out. I hope he joins our forum, he would be a fantastic resource.
https://www.youtube.com/watch?v=GnR1PMYE31E
Youtube Channel: Big Cat River Fishing
When coating paint with sand, use a mason jar with holes poked in lid spreading like salt shaker