1).Take time to monitor closely the progress of the project you are promoting to see other opportunity apart from the bounty reward
2).Be ready to invest when opportunity present itself.
With the number of bounty hunters increasing by the day,the reward is more likely to reduce than to increase. The earlier will accept that and move on the better for everyone of us. We should understand that, crying for unrealistic rewards can make developers and teams to promised unrealistic rewards.
I have thought for quite some time now, that bounty will soon go into extinction if care is not taken.
Bounty hunters are growing day by day. Sometimes, participating in airdrop is even more profitable than some bounty.
There are other aspects one can learn. Search and learn about them.