have you heard of longholding? buy x coin and forget about it for 6 month and you will live a life free of stress, and maybe come back with x5 or x10 gains 
Why are you sticking with "buy coin, hold or forget for 6 month"..
During that 6 month, a lot of mega jump may happen and you may loose significant funds..
Holding coins without daily checking/analyze isn`t smart way..
Why he is saying buy the coin, hold or forget for 6 months means he is observing market flow from last few months or years and checking how the coins will grow in 6 months of period. That is why he is saying. it means long term investment. And you also right in the middle of this 6 months we have chances to miss good opportunities many times. So you buy coin to hold 6 months but keep checking the updates don't sit ideally.