I personally don't spend much time on bounty campaign due to the nature of my job, but I wish I could spend more time. Lately I spend less than 10 hours per week on bounties and major subscribe to signature and media campaigns which I believe is more lucrative than the social media campaigns.
That's too little time you allocate here in crypto mate but maybe it's ok. Me, i spend 4 hours a day to see which project is good to invest and do some bounties as well. Maybe in the future i would try to lessen the time since it is stressful here.