The best way is don't invest 
. This year is a difficult year for ICO after the explosion of ICO in 2017.
I feel it, maybe this is a sign that the ICO will die slowly. too much cheating and fraud, I just became a small part in it. I have never invested unless my time to become a bounty hunter in 2017 is the best year for ICO and this year I have not found a real ICO, 60% ICO failed or extended.. This year is a difficult year for ICO after the explosion of ICO in 2017.