Most projects allocate for their bounty hunters no more than 1% of the total budget. And I really do not understand how they can affect the prices of tokens. I believe that problems and price cuts are due to other circumstances. First of all, you need to take into account the manipulation and the general decline in the crypto market.
Hope you are not experiences on investing on ICO and participated in the bounty campaigns.
You need to see the tokens listed on exchanges with the very few volume. For that time how you expect that bounty hunter unable to do any changes in the market. That listed value of tokens volume of will be lesser than that 1 percent.
Well, speaking on investing ICO I did that thing last year but I've lost them all. Some haven't listed yet and the majority of them are exit scam project which is quickly abandoned the project. We can't predict which new one on ICO's project is worth it and have the potential to earn a profit.