Stick with the USD whenever you see the market would failed,use technical analysis so you would know when would be the best entry and exits from your trades,hold whenever you got trapped with these altcoins,and buy more from the dips so that if the market has recovered you will make a lot of money from the bloody markets that we have.
You're quite right mate. We must be clever and be patient in order to avoid regret by selling our alts. In my part i have some tokens that still holding and bitcoin as well. I just wait for the market to extremely recover to have a better earned profits in the future.