When you get the maximum betting level on the Winch challenge, keep going until 
you get to about $100.0 million. The minimum bet is now also $5 million. If you 
continue from that, the minimum will actually grow higher than the maximum and 
allow for even more money. However there is a catch; once you go beyond there is 
no way you can raise or lower the bet because it is higher than the maximum, but 
it is still the minimum.