Hold. To avoid this, spread your investments across multiple coins. I've found 10% works well, so you can do 10 coins with 0.1 BTC each. If one coin suffers a loss, and you're holding the bags, it's only 10% of your holdings. Just shut the bot off and set a manual sell trade for 15% over the buy price (don't worry, at some point it'll spike back up).
I've kept a few bags and dropped them this way.