@rikhartz I might be misunderstanding you, but 300 is the threshold for auto payout, not what it pays out. If you hit a block you'll get around 2,000 coin. The 300 is just the level at which it's automatically paid. The 24 hours is how long earnings will be delayed before being sent. If you earn 299 during a 24 hour period, the 360 block trigger will pay them out without you needing to hit the threshold.

H.