How about truck bed liner paint, that texurized tough stuff. They sell it walmart and auto zone. The only down side of it would be is that it is black and would be hot as shit on your feet, but you could use it as your base and then coat it with a high quality enamel paint in a light color.
Lowes sells a two part epoxy paint for garage floors that is lighter in color and super tough.
Resin is expensive and not fun to work with.
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