That's right, its time to open up your own roulette interstate highway!
Initial tests show this works smooth as silk. This will pay 3 units on a win.
Keep spinning until you bank 3 units profit by winning twice in a row or lose twice in a row.
1) Raise each pile 1 unit -- if you win, the debt is clear and go back to 1 unit.
2) Raise each pile 2 units -- if you win, the debt is clear and go back to 1 unit.
3) Raise each pile 3 units -- if you win, go back to 1 unit and start again with one loss on the books.
4) Bet again. If you win, lower each pile to 3 units (9 units bet) and bet again. If you win the debt is clear and go back to 1 unit. If you lose this second bet start step 4 over.
5) Haven't been here yet.
I will keep experimenting here but the profit just rolls in so smoothly.