there are so many bounty campaigns some of them are trusted, some are scams, some of them are failed,  dome looks like legit till their ICO end but after they raised fund, they ran away with those funds. Some are attracted from their website design, some are because of high rewards.  the first thing you have to consider is the team of the project, next is the idea of the project. Another factor is bounty campaigns which you need to analyze before joining any bounty, analyze who is the managing campaign.

You must check first the project if the project is already build or it is going to be build look for the budget of the bounty if do you think it is worth it or not then read the whitepaper of the project and also the road map if they doing was is written there is a chance that the project would hype  and also look in the community

You can join some signature campaigns now. Many campaigns accepts jr member. But of course there will be a difference in income between the rankings.
You can make 5 times less money than a hero member

you have to read whitepaper, roadmap, ceo, developer about project. after we should look at community of project, bounty plan
if everything is oke, you can consider about that project

Looking/choosing for a bounty isn't easy because there are scammers around who are very good of deceiving people. But as to the quality of ICO, you can choose team first because it's the brain of the project and having a strong team means the ICO will likely succeed. Secondly, check the ICO's concept if it's unique, and no major competitors that are already in the market.

Before becoming part of every bounty check first and understand the whitepaper and you see the workplace because the brain of the project and have a team strong means that ICO likely to be successful

I make it totally simple. I look at the bounty pool, and the task that i have to do. So i choose the bounty which give me to most tokens or coins for the most less work that i have to do. Whats also is important that they are not too many participants on the bountys. Because when there are over 1000 participants you also have to divide for more then thousand, and thats how you earn a lot less coins.

As on of the bounty hunter, I think you can choose bounty campaign depends on the campaign manager, as they are mention because as new here that is my strategy, I choose bounty campaign of popular manager in bounty world.

Its not easy to determined which is good, legit bounty.Some of the bounties are good in the first place and they also have whitepaper and roadmap but in the end of the campaign you will not get reward.50/50 are the chance.To be able to get money in the bounty campaign that is not scam is you will got paid after the project or ico is end.