If your intent is to make more dollars then perhaps it will work. If your intent is to expand your BTC balance, this is highly risky. I have heard this method being preached countless times, chase the top and chase the bottom afterwards. Despite of this I know countless people who sold at what they believed was a top and they are still stuck out of the game. One wrong move can cause a massive loss in your Bitcoin balance. It is possible to win but it requires good research or a good source and good strategy. My advice is to never attempt this with your main stash. Allocate a small side portfolio. Try to grow it this way. If it fails, give up on this method and never try it again.