I usually put the stop loss in my mind specially in the futures market. How many times i have see that prices dump and wicks are made only to eat your stop losses and then the prices move back up.
I do hear about this tactics more frequently to hide from manipulators or from exchanges but not sure why and how such types of trapping are more commonly happening. I guess when there would be enough volume then I guess we can freely place stop loss order well in advance without worrying about a spike just up to our stop-loss levels.
When bitcoin market in the overall positive trend then you can keep your positions without any stoploss order but if you're trading in leveraged environment then you should go for stoploss orders otherwise your position will be auto squared off to cut losses not exceeding your total capital.
Always placing stop-loss orders will help because for example, right now bitcoin market is bullish but slight pull backs are more frequently happening time to time hence we cannot be sure about auto squared off in leveraged trading. Spot trading with bitcoin definitely not requiring stoploss if you are ready to hold.