"Double up to catch up." How many times have be heard that expression? Over the years we have come to believe that maybe the casinos made up that saying. Think about it. Their idea (the casinos) is to put up more money when we are losing! I don't think that is the best way to win at blackjack or any other game in the casino. What we do when we find ourselves playing against a cold deck or shoe is to reduce our bet to the lowest possible amount and wait. Then, when thee deck changes and it starts to get "hot" for us we increase our bet. When we're ahead we "double up," not the other way around.