Imposters will pretend to be anyone to get you to send them money. A good strategy requires not to follow every signal but to skip most of those signals with the help of some additional method. This can lead to missing out on later gains and under-performing the broader indexes. The reason being, their simplicity, together with the certainty which they offer on every trade, makes them an attractive trading tool for many financial investors.
To do the above manually can take years to get just one system perfect.