I would suggest looking at the product/idea when you can't rely on the general market momentum and trends.
For example, KIN may be integrating their coin into Kik's chat app as soon as this month. Once fully integrated, this will make KIN the most used crypto in the world... I would imagine that could lead to a coin rising in any type of market situation.
in any case, you need to be able to study the technical documentation of the project, and also analyze the growth and fall schedule for the coin price. All available information should provide a minimum of opportunities to determine the real prospects of your investments.