How about Bounty hunters avoid such Bounties.
If you see an overcrowded Bounty, the best you can do is just avoid it.
Instead of doing free marketing for projects here and there.
Also, chat up Bounty admins and suggest ways to make Bounties better
Exactly if that bounty had too many participants. You should avoid it and participate in other bounty, it all depends on your decision and no one can give specific rules in this forum. The opportunity is for everyone and it's very fair
A bounty hunter is expected to make through research part of which by trying to avoid bounties with many participants with a small budget of course such bounties will pay less at the end of their promotion however a lot of newbies never bothered they kept on joining as many bounties as they can to ensure that at least they will earn as much as they can not minding how worthless some of tokens will priced when listed in an exchange.