You have sumed up the voice of all bounty hunters in your little Post. Bounty hunting was never fruitful especially for low ranked members. Even if they get stakes and the luckily the coins hit the exchanges, it almost worth less.
I always recommend BTC campaigns as you get some real reward for the efforts.
But, anciently the altcoin paying bounties would have provided good gains. But in the present case, btc or listed coin paying bounties are definitely the best. Or not to waste your time and stay away.