Board Thread:Questions and Answers/@comment-12262801-20130821205706/@comment-10751008-20130822000519

I recommend collecting as you see them. I don't see much benefit from holding off until 100% because after you reach that point it will completely stop earning coins. Monsters earn coins non-stop until they reach their maximum. Collecting before 100% will "extend" the time they earn non-stop, allowing you to earn more coins in the same amount of time compared to holding off. I think Belthazar said something about this, and he described it a lot better than me. :P