Becoming a bad habit of mine to invent new systems! :P
Anyway, this is Hi/Lo-Repeater..... Bet the last 6 hit numbers in HIGH or LOW. Use progression for 6 numbers 1,2,4,8,16.... (6 spins for each step) That progression is not perfect... Or use an ordinary 6 numbers progression.
+500 in 260 live-spins. (Using 1,2,4,8,16-progression)