OK would be an idea, but much work to check this all.
I cannot see at hive.blog with what voting-power a comment was voted.

So I prefer to reach this with attractive cards and not by rules.
The last three cards are more than 1 USD worth each, I think all three together more than 5 USD, so I think it will be even a good deal if you upvote 10 comments with 0.03 USD, so everybody of this 10 would get a payout, to get the card.