Rather than blatantly stating wether this "system" will work or not, you deserve kudos for presenting your thoughts with a graph and as a concrete topic that may be discussed. This usage of MACD isn't proprietary or secret and many use weekly timeframe for filtering markets and long-term opportunities.
However, in my view this is not yet a realizable trading system, as you don't really describe how to trade it. Apart from the pretty graph, there's really no way to measure its profitability without some answers to questions such as:
However, in my view this is not yet a realizable trading system, as you don't really describe how to trade it. Apart from the pretty graph, there's really no way to measure its profitability without some answers to questions such as:
- How often (ie. per week) will you analyse and take trades on this system?
- Are you comfortable waiting a whole week before recognizing and acting on a signal?
- In the graph, where will the final system take trades?
- Are the simulated trades too optimistic and perhaps should it always take the pessimistic price?
- Are there more details that should be clearly defined and then result of backtest shown with appropriate figures?