One chip at a time per any chosen number (flat betting).
Corresponding streets: Two chips.
Also place two chips at a time on the most frequent street (ahead of all other streets in area 1-36).
Stop the session right after hitting a number and its street.

Write the winning numbers in twelve columns (1-3, 4-6, 7-9, 10-12 and so forth).
The latest two outcomes  in any such street column must one number repeating itself. Bet that number (and its street).