I played NAPA for one session. I really liked it. Team fell apart for the next session. I like the rules and rating system. No paper work. Everything done on the computer. Only the home team keeps score. No innings to track, no safeties. Just who won the game. You can track each team for every match on your computer in real time.
Matches are longer than tap or apa. Sandman currently has in house NAPA 9 ball league on 9 ft tables. This allows teams to play more than one match at a time. This shortens the night.