Sharp pumps always mislead. Do not get misguided by signals which are based on short time frame. Your profit levels will be purely depending on how much long remain disciplined and patience enough; I mean when you are generating your signals based on longer time frame then you can easily skip pumps and dumps. Spikes are always the indication for staying away. But unfortunately people are looking for spike to get into manipulations so that they can make quick profits but unfortunately most of the times they do get trapped by sudden dumps.