Like "for the love of god, don't put in more than 1 seer per wolf".
And "please don't tell the seers which wolf they scan for".
Time length isn't important. Post intensity is.
The idea of wolf-specific seers isn't bad - if you don't put in more than 1 seer per wolf, and/or don't give the wolves numbers so the village cannot identify who is lying so easily, it's actually a rather decent idea.
But implemented like this .. it just isn't workable.
(Theoretically you could have 8 half-seers if you don't tell the seers who they scan for and don't give the wolves labels. That *may* work. But it would still be pretty damn heavy on the player roles ..)