Liquidity pool questions

A few questions on providing liquidity.
How do you keep track of your earned transaction fee’s you collected in your share of de pool?
Besides claiming Zwap, how do you take profit on the earned transaction fee’s and how often will you do this?
Is it best to wait for the moment that your pair prices are close to when you added the liquidity to avoid making an impermanent loss permanent or does the earned fees outweigh this disadvantage?