My best share climbed to about 30 billion just before solving the block. I'm not saying its always like this, I just look for patterns, anything to help know when it is more likely to happen.
Just my opinion, and what works for me. I'm interested to know what "system" if any, others use...
rent hash cheaper then the odds all other systems are simply gambling.
123.1 th should earn 1 btc in a day hitting ck's pool would give you about 25 coins
you need to rent 123.1 th for less the 1 btc for 24 hours.
so as long as your price is under .0076 the odds are in your favor you are not gambling you are making an investment. Which if done over and over and over should make a profit.
So my system is determine the correct price to pay.