Yes you are right Pockets, it is much bigger than the excel figures show, excel only shows the negative. The biggest drawdown is around 2500.
The progression is just 1 2 3 4 etc with a cap set at whatever you like. You could also use a limited Marti or any other negative progression you want. I found a cap of 5 to be the best one. Then you need to bet in sets of whatever you find appropriate and if your BR is not increased after the set number of spins you apply the next step of the progression until you hit the ceiling then either keep betting the ceiling or revert back to 1. By setting your ceiling low your bet does not get very high. In this case 40U.
This is a grind, not a get rich quick bet. Katouras said that in his interviews, he said the problem with most players is they are looking for easy money and lose because they are in too much of a hurry. Winning requires work, losers don't like to have to work to win.