The fear of dumping often makes the project team fear or avoid the payment of hunters until sometimes after the exchange listing. I wonder why the team make themselves restless on an easy thing like that when they can easily conduct their bounty with bitcoin or ethereum for payment. That will safe them of the fear that the bounty hunter will dump after the exchange listing.
If the developer team believes in the project and also the selection of good exchangers, I don't think the developer team should be afraid of dumping from hunters. I think hunters will continue to hold if the project is listed on a trusted exchanger and also has a good partnership with other companies.
If the token doesn't have a lot of liquidity and the team must afraid with the dump that caused by the hunters. this is happening so many times with the crap coins. but when it comes to the good coin and you will be rarely found a case that related to the bounty participants. But that can bring the price of token to the bottom.