What's the dual mining coin of choice these days, or do people not even bother with the dual part now that there's essentially 0 earnings?
Well, you can try Zilliqa (ZIL). Though - strictly speaking this is not actual dual minig - you mine ethereum, and than for a few minutes you reroute your hash power towards ZIL (mining algo is the same - Ethash).
You can start here:
https://zil.rustpool.xyz/get-startedOr any other decent ZIL pool.