This idea might seem a bit left field but I would be interested in people's thoughts.
Find any systems that has prolonged losing and wining steaks (a smooth and trending zig zag equity curve). When the profit turns down reverse the signals. The system itself is irrelevant providing spreads do not account for the majority of losing trades.
The idea is to profit from the changing nature of markets. So long as the system continues to succeed and fail in streaks you are doing OK.
If any of your 'failed systems' generates this type of equity curve you may have something after all.
Find any systems that has prolonged losing and wining steaks (a smooth and trending zig zag equity curve). When the profit turns down reverse the signals. The system itself is irrelevant providing spreads do not account for the majority of losing trades.
The idea is to profit from the changing nature of markets. So long as the system continues to succeed and fail in streaks you are doing OK.
If any of your 'failed systems' generates this type of equity curve you may have something after all.