Here's a suggestion: as well as '2x', how about a 'martingale' button, which multiplies your bet by whatever it needs to be multiplied by to cover previous losses and still make the same profit when you eventually win...
That's a great idea actually. Drunken math = legit math.
In general though, why wouldn't you reveal each day's secret the moment you stop using it? I don't see any need to wait once the secret is no longer being used.
It's arbitrary I guess. 4 hours is not a long time considering the 12 hour average wait for the day to be over.
Another thing... I've seen a few people with coinroll ads in their signature, and they've all been very hard to read with the dark forum theme I use:
Oh, didn't even know that you can use a different forum theme.