For you to make profit on the fall of market, you can buy as much coin as you desire and hold them as long as it is a legit coin, you can also invest in icos or even participate in as many bounty as you desire as long as they are promising projects because when the market recover from the fall and the price of this coin or token rise, when you sell, you will make profit.
I recommend bounties, they are a bit more reliable than investing in the ICO itself, though the later can give higher returns in the longer term.