When there is a new airdrop coming usually when the coin lists in market it tends to go down in value.
Sometimes it goes the other way it increases. I usually avoid such coins for a while until it starts to go down then I put a short position with high leverage and stoploss. Always use a low margin since the coin is new it can act in a weird way. Once you start to get 100%ROI use a trigger price near your start position. Increase trigger price as the ROI increases or use trailing stop. Usually price go as down as 40 percentage of it's initial value. Be disciplined. Don't feel guilty if lose some profit.
This are the steps I use. Peace✌