I thınk you can't avoid scam ICO's if it is in your faith

because they can look legit and after six months past of their ico they can say we are done we can't deliver this product because of this because of that bla bla.. You can protect this situation with blockchain or nothing else. If you are not a risky person you need to go on with BTC LTC and Eth or really good proven altcoins.
Yes it's hard to avoid scam ICO projects cause in the very first place I think they don't want also called scammer but since there's a lot factor to considered its projects some of them will not succeed. As a member of this community we must continue our task here cause a quiter never be a winner be always hold our patience in order to achieve our aim to become financially liberated through crypto world.