Holding is the only way for altcoin investors now unless you want to accept your losses and exit but its better to have patience, i have seen coins that worth 1,500$ a year ago and they are now 200$ , i have sold airdrop tokens that should worth 150$ for 10$ to sustain but i am not stupid enough to get rid of all my tokens and coins because market is not in my favour, be wise and remember that those tokens you are getting dispose off can turn something when market start turning for the better, be determined to win,when thinking forward always think backward as well.
When the market has experienced a bad thing and it lasts long. I guess the market will definitely be back spinning. So I won't be selling my coins like results from Airdrop, Bounty campaigns and investing. I always hope that the market can return as in 2017.
If it could happen all the coins that now have a low value, I think slowly going back to the pumping. I am currently still following the Bounty campaign and some Airdrop. Because I am sure if continuing to struggle will result in something good.