If you don't want people to bet right before the bet ends, then simply reduce the potential winnings gradually right near the end.
This is already the case, which shows you still haven't read the FAQ. 
You really read nothing, did you? Perhaps do that before taking a side.
"Hire me" https://bitcointalk.org/index.php?topic=240677.0
I wonder how much you got paid for this thread. I doubt you even got a whole bitcoin. You're the bottom feeder that other bottom feeders shit on.