Nowsaday, I don't think there is any ICO worth to invest anymore. I had so many bad ones lately. Better off purchase them after they released at the exchanges.
And it consider as too late because I can manage to get more profit before 'the coin' released at the exchanges.
You're right to prevent any further loss and try to be safe but that's why knowledge and instinct are the most important factors to determine which coin will has great attraction and a lot has been proven as great investment. But, people should realize how risky to invest before coin included on exchanges too, learn before join in.