I think that if you are not a professional trader and do not have the necessary knowledge to analyze the coin charts, then such a strategy is equivalent to roulette. If you invest in cryptocurrency, then every coin in your portfolio should be studied and you should have a plan when to sell it and when to buy it. Therefore, it all depends on your approach.
Exactly, if you don't have enough knowledge using this strategy it won't reflect much as you still need to study each movements of the coins inside the market, diversifications is an alternative ways if you really good in assessing and analyzing potential coins to move up while some of your investment
are still stuck with your previous assets, cut losses and buy another coins to jumped in another bandwagon can be done correctly and timely if
you really got a good knowledge around the market situations.