Firstly evaluate the project in which you wish to participate, because if this project has no worth for community, even the biggest bounty pool will not help. Token you will get for bounty tasks will cost nothing and your work will be in vain. If project is interesting - so pay attention at the amount of participants, duration of program ( the shorter the bigger reward) and the pool.
Yes, these are good recommendations for choosing ICO projects to participate in their generosity campaigns. First of all, you need to evaluate the project in terms of its need and utility for society, otherwise you can get many, but worthless tokens. They will just be in your wallet for the collection.