I don't have an answer that makes economic sense, other than luck chasing, but it seems that last week was quite good for those leasing their mining equipment.  I have my two S3+'s running through LeaseRig (they provide what they call LR3, a proxy that lets me get some reporting for my own mining and then can instantly switch to a renter's pools with no intervention on my end) and last week we had almost every rig rented.  My 900GH kept getting picked up in 1h increments by two different renters (one kept paying in DOGE, the other in LTC) - as soon as it would come off lease, the other would pick it up. Neither stayed at the same pools for too long, I saw the pool settings change several times.

Then suddenly, it stopped and renting went back to normal.  As I look now, 25/45 of the rigs are rented out.

Doc, don't know if it's easy to add, but I like the performance chart they have.  Would be neat to have something similar when mining directly.

http://i.imgur.com/aFwPQ5Ql.png