I wait when bounty competitors start selling tokens, because I can still buy PTM
Usually, you can buy at a cheaper rate once those bounty or airdrop hunters start to sell.
They don't care how much would be its value in the future as they are looking more for the value at the moment.
So sometimes, just wait once it hit the exchanges and buy at that period.
And if the project has really something to offer, they will start to gain its momentum.