In a world where you have access to vigfree lines would it be easy to make say 2-3% ROI on wagers? For example watch price movements of MLB lines from open. Say in the first 8 hours it goes like this:
This looks like sharp money pounding an opening line to the current "true line" and then stopping because -126 no longer provides value in their mind. However, the vigfree line may be -122 and still worth betting, correct? Or do line movements & book line adjustments not really work like this?
Not related to this post topic, but one more newbie question: a line of -109/-101 suggests vigfree odds of roughly -105/+103 correct?