Incorrect toe in feathering pattern should appear to be "opposite" on the other tire ...I think... if that makes sense...
Feather from hours of left or right rudder input to trim for crosswind should appear the same on both tires... I think... the one near side to the wind less than the opposite side because it was running more in line with the vehicle direction, the off side was running with "more toe in"..
Your MH has needed 6 alignments in it's life? What were the causes of the un-alignment each time?
We live in a windy place so alignments are kind of useful about 20% of the time :) And our tires get scuffed off the other way because the wind generally manages to swing round so you are headed crossways into it on the way home too. :)
Just some ideas