I spent most of my time doing research on many altcoins, their old price to the present value and i find out that even if you sell your tokens today leaving few tokens worth few dollars for many years can worth something. For example if you left 9$ worth of bitcoin in your wallet since 2012 you would never have imagine what it will become today, in jan 2017 you can buy 5000 pieces of Ripple at 0.007$ which costs 35$ and in jan 2018 a XRP cost 3$ which turns 15000$, there are many examples like this on CMC, remember Tron too? My point is its bad selling off all your coins, if you needed money that bad always leave coins and tokens worth of few dollars left in your wallet just in case
You don't lose anything by trying that strategy but to me that seems to be effective only for bounty hunters that use their time and not their money to get their coins, if you invest in a coin your money you do not do it to lose money you do it because you want to earn money and if that coin begins to show some problems then you're going to sell your coins and not leave anything behind because you want to recover most of your investment, but for bounty hunters this is not the problem because at worse they are going to lose a few dollars if they decide not to sell their coins and the potential profit that they could get are worth the risk.