I haven't been watching them either J-man but I have an idea that buying from -1 1/2 to -1 (especially for a home team) would be like buying from +2 1/2 to +3 in the NFL. It would cost too much.
For example, Fla is at home today with a -1 1/2 RL @ +107. The -1 RL is @ -161!! That's a lot to pay for 1/2 run.