I've been reading Sharp Sports Betting, but I'm left with some unanswered questions about Wong teasers.

What I'm trying to understand is if/when it makes sense to tease lines that are just outside of the [+1.5, +2.5] and [-8.5, -7.5] ranges, but the consensus has them in or on the other side of the range. For instance, right now one book has the Vikings +3 -130, and Pinny has them +1 +122. I'm trying to figure out how to tell if the Pinny line should indicate that teasing the Vikes to +9 on the other book is good value. This is sort of an extreme example, but there's plenty of times where I see a team at +2.5 in many places and +3 at another. I'm sure there's some breakeven point where it makes sense to just take the +3 instead of teasing it, but I can't quite figure where it is.

Maybe this sounds square as hell, but I really feel like I'm missing something.