If you haven't already sold your ALTs simply hold if your project is decent. If the project has no future sell and buy into a decent project. This is all you can do to recover your loss without putting in more money. It will probably take a couple of years to recover your loss!
Some ALTs will never recover from this crash!
It is an ugly situation!
Those altcoins that can't able to recover are the shitcoins and We all know that. We can hold the coins if it is really has a potential and have a reason to to hold and buy it because it has a bright future ahead. But at the situation We have it now Holding is the best option for it to apply here in this business industry.
some altcoins really can't recover because they don't have the power to get back up, so make sure you only save and hold potential coins. actually altcoin has a very big risk, many altcoins can be shitcoin at any time, so becarefull dude!