Stick with the top end books that offer second half lines, and let these half-a$$ books go the way of the dinosaur. That's the only way as bettors that we're going to get decent service. Go where they treat you right.
It doesn't take much effort to put up a second half line....the least the book could do is copy someone else's halftime line....isn't much more frustrating than having a solid play, watching it come in, and not having any money on it because you weren't offered a line.