For now we will not work with any pool, since the new rules of RaiBlocks you have to accumulate until you reach the top 60 to receive payment in the next round, even that doesn't look like a real problem since some that are in this service reach the top 60 once in the day. Even when you don't reach the top 60 once in the day you can easily do this once in the few days without clicking the whole day.
There is one problem though. If you reach top 60 when the total number of claims is very high, this means that you will receive lower mrai. My tip is when you already have 2000 claims, watch the total number of claims. If total number of claims is very high, stop claiming for the hour and when it is low, this is the time you should go full speed on claiming and target to reach top 60
Besides, I solved 509 captcha yesterday and earned 19.36 Mrai. Is that amount of earning good or just average?