Re: 2 AVA4.1s Won! [4400 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS]
with fixed price and limited ths they give you more hashing power, imo to burn thru the coins faster (sorry I am a bit of C.T.)or am i the only one that happens to 
Yeah it does seem like my next experiment should be less hashrate for a longer-term, eh? It looked to me like you could only place 24-hour long orders. Am I missing where you can rent for longer? Or do you just have to go in every day and "re-up" before the order ends, to keep it runnng for, say, a week?
Shorter means luck has "more" effect on the outcome.
There have been complaints about overage of power on NH and WH but that is uncontrollable really to a degree. I don't think there is a limit on time other than orders going stale. But as kano said, it all is the same with different risk. There is no way to trick mining... Shares are shares and their weight is their weight. Don't expect to ever see your N avg show 100 or even 50. Your shares will count as they should. I would stay away from fixed as it almost always shows paying higher than expected earnings. I never pay more than the expected break even and at times you don't break even.
You should read the gambler's fallacy post and comments a ways back in this thread. It's a good read.