I have one in Google docs but it has to be customized to some extent for each event.
It first ranks players by score (obviously), and will highlight top 16 for playoffs. Then for ties, and to avoid a long tie breaker round, it ranks next by players who got the most hole-in-ones, then hole-in-twos, etc.
(Amazingly at Pin a Go Go, two players tied with an identical record)
It will also show, as the tournament progresses, the best and worst scores possible for the player, and their best/worst rank possibilities.
Of course, you don't have to take top 16 for finals (or you might not even be planning a finals), however, the main limitation is the spreadsheet is setup for six holes. Adjusting the number of holes is a lot more involved. If you pm me a week in advance I might be able to help out next time.
All that said, a basic excel spreadsheet will work, and I've also done several pingolfs on paper too.
I'm assuming you are forming up groups and then they play the full course. If you do that, I recommend you at least split the score sheets into two or three sheets. So for a 9 hole, there would be 3 score sheets. That way, after 3 holes they will report those scores and you don't have an avalanche of score sheets to enter all at the end. Good luck and have fun!