You simply shouldn't waste time and money on them. If you're going to support an ICO, don't do so because of profit, do so because you actually believe the project is worth investing resources on. People used to be able to make a lot of money on ICOs, but that has gotten a lot harder since.

For some perspective, one research found that about 80% of ICOs are scams and that only 8% were decently successful enough to land on an exchange.