Alpha is Satori and Bluefin.
Both got decent funding (10 mln for Satori and 29 mln for Bluefin). 
If u look in the past perp dexes are doing very good when we talking about airdrops (Look ZETA, AEVO). Both are cheap to farm. 
Bluefin is kinda more expensive because u need to get vol there (at least 100 k to get in gold leauge). Cost is around 40$, but u get some $SUI rewards, so it will be cheaper overall. Personaly made 500 k vol.
In Satori u just make daily txs with, lets say, 30 $ on x10 lev. U can use more if u want. Its very easy to rank up. U can check ur points in leaderboard.
Both of these are underfarmed. Dont fade. 
Feel free to use my refcodes:
https://trade.bluefin.io/referral/v2-esduvl
https://scroll.satori.finance/?referralCode=3M8POP
Im using Satori on scroll cauz its 2in1.
Happy farming everyone.