Naturally, the speculative approach requires an understanding of the properties of the market, the nature of the various trading instruments, long observation of the charts, the existence of a serious, reasonable trading system.
Buy fast, sell fast, it is a short-term strategy characteristic of non-investor traders. Because the trader has the principle of a little profit is enough, then buy again then sell again even though a little profit. The constraints must be large capital and the implementation time must be fast, because the price is not stable. This type of transaction is more dynamic than investment, HODL long waits until prices rise.