Hi. this is a simple system. I like simplicity
wait 25 spin. place 1 unit on quad(4 no. s) that did not hit last 25 spins. you may find 1 or 2 quads or so. if you never find 1 quad, spin another 25 times. it works on RNG. 1unit = 2 or 3 pounds is fine.
gentle progression like following: 2,2,2,2,2,2,2,2,4,6,10,12 and continue until 20 approx,. . . .
you will find it hit around 5-10 spins or so. I once had it hit after a couple of spins.
1 unit, corner payout is 8:1.
e. g. in last 25 spin. 1,2,4,5 did not hit. place 2 pounds on that.
return, if it hit within the first 5 times is very high. you have many opportunities, almost 25+ opportunities for it to get hit.
then when completed. track another 25 spins and cycle repeats. don't panic if not hit. need a good bankroll, as sometimes a cold quad won't hit for 15 more spins.
or close and reopen program, after 1 win.