Base on my experience, its really hard to spot shitcoins, especially if they are still newly launched. Most of the shitcoins/ scam coins are exposed only after some time and that could even be months until you realized you are holding it.
It's not so hard as long as you are using various sources to get the latest information and analyzation regarding the project. Just believe if not only you that does an analyzation to the project. Just join into the active ico group that was doing proper research to the any project and that's enough to avoid the shit scam project