Interesting topic. I tried to start a similar one with some questions about bounties. Why are they necessary, what they are doing what the team can not do by themselves.

Well, I've got just one answer with recommandations for bounties, but nothing else. Seems like the people don't have a partcular interest in this topic. You know, it's like bounty managers are there so you need them. Not so many people question the real need of bounty.

Here is my small experience in ICO without bounty.

We made our site by ourselves www.bfreecoin.io
Our CTO made the Ethereum based smart contract 
We got 2 days ago online and keep posting in different forums ans social networks
Still there is unfortunetely just 1 ETH on our cintract, although our project is very conservative and already far advanced.

I don't think it is because we don't have a bounty manager. We are just two days online which is not a long time and did'nt advertise before. That es something I would definitely do different next time: making the project known before starting pre ICO.

Will see what happens next days.