Minimal bet treshold

How do you guys set it?

  1. Fixed minimum value
    We assume that kelly already reduces variance by lowering stake for higher odds, so we set minimum value and bet everything above it.

  2. Increasing required value percentage for higher odds
    It seems reasonable thing to do, if you got 2% valuebet with odds of 100, you wouldn’t bet it, would you? But you’d bet it if odds were 1.80.

How do you handle it? I’m very interested in experiences.