"Long term" and "stop-loss" are contradicting thing to each other. Stop-loss is only needed when you're into short-term trading. Because, for short-term trading you will never need to go for in-depth fundamental analysis but only technical will be enough to buy and sell within a day or week. When you are having good fundamental based coin then you will never need to worry about exiting at stop-loss. Because, you can be confident about bouncing back of prices at any time soon.