I want to have a serious debate about this bet: wait for a dozen (or column) not to be hit for 4 spins, then bet that one with negative dozen progression.
i have done some testings with ordinary negative progression (that bust after 1200 spins) but i prefer a cyclic negative dozen progression (plus one unit after 3 spins, and keep the same bet , continue progression from there, until recovered, then reset-restart.
if you are going to critize this betselection, come up with facts and gameplay, not just speculation