If you're waiting for the bottom to jump in, consider investing time instead of money. I like airdrops because of the minimal time spent on each sign-up. It's also helpful to have a source that has already weeded out the BS.
Patience is what will make you rich, not trying to get perfect timing.
AIRDROPS THAT MAYBE DON'T SUCKhttps://docs.google.com/spreadsheets/d/1OoNKjUxXkp-g0Etn5XZdD8lD3FiUngY8GfDNNoAWGPcLike this one.
https://gonetwork.co/airdropWinners of ETHWaterloo - the world's largest Ethereum hackathon. I bet you didn't know about that.
Check out the Google spreadsheet for an active, ongoing list of other airdrops that maybe don't suck. I update it daily.