We all are well aware of ICO
frauds.
I use the strategy to start with a whitepaper, see team member details and the roadmap.
What strategy you adopt to make sure the ICO is not a scam/fraud?
I also use the same strategy that you do but in addition, I also ask for experts' advice when it comes to projects. I consider my self as a new member of this cryptocurrency community and I still have a lot to learn. There are also communities in Telegram which will help you to judge whether a project is a scam or not. And some people are doing some ICO review that is available in YouTube.