Very informative.
I'd add that it's probably optimal to get the DV weight accurate - if for example using a BOT gives someone a 50% return, I really only want to to DV someone until that 50% profit has been eradicated, that should be enough to put them off, saving more DV power to be spread widely.
Thats what I usually try to do, I look at the bid bot amount and nullify the rewards. Or in the case of @onthehook8 I removed their self upvote worth before payout.. Leaving them with the worth of the other upvoters.