At the present time scammers are so wisely and its hard to choose which project are good or which project are not good, so its better to have many strategy/ tools to determine which project are good.
Here are my basis to choose possible good project.
1. Management team- must be trusted and popular.
2. Project ratings-You can visit and websites providing those information like icobench.
3. Project quality- Must be realistic.
4. The project must have many activities to spread information about the real situation of that project to show its realistic.
That`s my basis to choose bounties. Its hard to choose good project but we need to take the risk because crypto project are for risk taker.