For tracking points across the season, I built out a sheet that lists all 16 games in the season, and I enter everyone's earned points under each date and then sort them into ranks by total points. After each game, I update it and print out a new one to post at the club. Asterisks and special formatting indicate who has qualified for the final and who is not participating (by choice or because it's no longer possible to make 8 total games).
As you can see here, I'm in second place as of last game, which is wildly unacceptable, but I plan to fix that on 2/4.
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As to how I calculate points for each tourney, the formula is this:
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I inherited this formula from the previous host. Between seasons, I considered how I might modify it, but TBH it's a good formula for our purposes. Grants a solid point advantage to top performers, but it's a linear gain that starts at 50 + N, so it rewards participation significantly even for players who don't go far in a tourney.
These points end up being the proportions I use to give people their starting stacks in the final event. Last year I did 100 chips per point. May do 50 or even 20 this year; I'm still thinking about it. But that's how it all works.