I tried once: I couldn't hold onto spot, and I wanted to "improve efficiency" with futures contracts, and the result was selling the spot at a loss + getting liquidated on the futures, a double loss, pretty frustrating... Later, I gave myself a simple rule for position management: first, treat "whether I can sleep well" as an indicator; if I can't sleep, it means the position is too big; then, clearly write down whether I can accept the worst-case scenario, if I can't accept it, don't open the position. To put it simply, the purpose of the position isn't to make the most money, but to survive a little longer. Recently, there's been a trend of social mining and fan tokens, attention as mining sounds pretty appealing, but I see many people actually using emotions as leverage, getting more and more hyped, and in the end, returning to the old problem: the bigger the position, the less clear-headed they are. Anyway, I now prefer to miss out rather than experience the cold sweat of a liquidation again.