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Using a tool like Steemsql but for the Hive blockchain could easily give Hivewatchers a report of people self upvoting comments. And if they used a different account we could pull a report for the most upvoted comments a day and find it that way. Or maybe a tool like Ginabot for realtime reporting of such upvotes so they can be dealt with right away and not needing to wait for a daily or whatever interval report.

is there a anything public you can link me to?
I am curious to see the logistics, how many people are still self vote farming, how much downvote power is going unused etc

https://steemsql.com/

and

https://steemit.com/@ginabot

for Steemsql you must pay, ginabot is something that can be setup on discord for notifcations.