If I won the first round and it doubles my money on my hand, I will just take the half of it to circulate again in the gambling and the half will be keep as it is nowt my profit on my gambling budget.
I guess it is not that bad to be wise, since I can keep my money that a lotted to gambling so in time I can play again in some other round.
I will do the same thing with you friend, I will keep my winning money and play again with what is just placed to my gambling budget J
Better to keep safe than to lose money, it is thinking wiser than wise of making profit again by the profit itself. It was your luck and luck might not come around in the second time.