It is not a good idea. In theory it would be nice, but it doesnt work out like that for every stock. In fact, most stocks (probably like 99% of them) dont flirt with a 50 cent gain 99% of the time. Those odds arent in your favor, so why try them? The scenario you have painted is dreamy, but dreamy only happens rarely. Like someone has noted as well, there is an issue of diversification. If you have millions and money to spare, I guess you could experiment with that money, but you likely dont so you definetly shouldnt.