New to whole Wong Teaser but potential one for week 9

[LogistX]

I have a question about wong teasers. Currently, I'm seeing SD at -7.5 @ Min. Obviously I intend to wait until Sunday, but presuming SD is still at -7.5, I would think this is not a great wonging candidate. It seems to me that the only thing moving the line from -7 to -7.5 is people betting on SD. I know road favs are worst performers of wongs, but assuming I would tease those anyway, I feel I should still avoid this one.