I'm making my own Air Hockey Table and the dog thinks the pucks are chew toys. Once bitten they don't float so I ended up making my own. Everything is completely parametric so you can experiment with whatever works best for you in terms of diameter and thickness.
Larger diameter pucks tend to float better because they have more air under them. Play around with the thickness and size of the air gap until you have whatever works best for you.
This is also a really good test of your bridging, although nothing dramatic like the whistle it's still cool to watch it build.
Try to print these at close to 100% fill. Not so much for strength, but for mass. Heavier things feel much better in the hand for handles and pucks are less likely to fly off the table.