Th coins for day trade vary....each day:) it would depend on what indicators you use to trade. I like Bolinger bands and a 50 day SMA. As i usually go on polo i use their default BB. I put the fibonacci levels there as well . Fo rthe coin i try choose a coin that as been in a wave pattern with support and resistance in the bolinger bands. usually can take some profits, but for day trade i go for 1-2% max 5% per trade.