I was once an investor had few gains to some ICO/crowdsale but made many losses so I decided to stop participating in ICO instead I do bounties and buy it thru exchanges from bounty hunters dumping it.
I know for a fact that most of you know this situation and are guilty of it, price tends to tank due to bounty hunters selling their share of tokens for cheap. I think its better to pay hunters in eth or other alts rather than risking the price of their token or coin in that way they could also help their investors and boost confidence to their future and their project. Well for me a falling price is a mark of a failing project "ICO's"
I think that's not matter with regards bounty hunters dumping their tokens after they received their part from bounty. Because its only around 2 to 5% were only allocated from bounties, so it just a small part compare to those who invested from a project. If the project was really a good one it will last like some top altcoins who still profitable to invest.