5% a day isn't so bad at all, it's a good strategy if you are gambling everyday and whole day long. But to consider 5% as enough profit you need to have big bankroll so that you can see to it that 5% would be enough for you. You need to have at least 0.05 BTC to have a good return with 5% everyday.
I would rather consider trading and getting those 5% a day which is very possible if you know what you are doing than gambling and expecting 5% a day. Do not get me wrong, I am not against gambling but I am against expecting too much from gambling. 5% as far as I am concerned is too much to even expect. You will be lucky if you even get up to that and if you do not end up getting those 5% losses over and over again.
Exactly same point of view, I too don't believe any strategy, specially with Dice game. Its pure luck for me, never had a overall profit in that game. To earn a decent percentage in a day I would say trading gave me much more even when I was a rookie a year ago or when I just started learning.The maximum I could touch is only 1-2% while playing Dice on a fine day, but then I made more than that nearly while trading.