Yeah, when renting a lot of hashpower for a short time there's a good chance you either double your money or lose it all.

I could double the size of each shift and we can see how that works out. I get the impression that most people renting hashes for Bitminter would prefer that. And those mining 24/7 with the same hashpower aren't affected much.

Are there anyone who would be unhappy with doubling the shift size? It would make unpaid shifts much more rare.