A strategy I have used for a long time which has lead to excellent gains in the past is to observe the cryptomarket the day after a big crash.
The theory being, in a crash where all the alt coin tank against BTC, investors are moving to BTC to protect their gains.
Once the green shoots of recovery begin to show, they invest back into alt coins and usually take the opportunity to rebalance their portfolio.
One of tge single biggest drivers of value in alt-coins is opinion and confidence. This is the time where that opinion is laid bare for all to see.
My tips based on todays market, PRL, NANO, XBY, NULS, PHR and ICX. All great coins with excellent underlying tech which have been very good to me and todays gains show the market likes them too.
Prices are still great today even after gain so plenty of room for significant growth.