Possible YM Systems
YM5_2
S2x2
S4x2 (better than S2x2 because of resistances at 3)
S4x3
S4x4
S5x5
All stops are trailing on the 5 point grid. The grid has to be crossed for stops, which reduces the performance by 1 tick at the entry and 1 tick at the exit.
More backtesting is...