I have an account with sportsbetting.com, and they never have money lines for hockey.....why???
Can't really say for sure other then I know for a fact they are a square book and might not what the kinda action that moneylines come with.
Very few puck players are sharp enough to play puck lines because of the fact that reg season hockey can (and often does) end in a tie. Eliminating the moneyline from their card forces you to bet the puck line therefore giving the house a much bigger advantage over the player.
Again, just speculation but that I more likely then not the case. If you wanna play moneylines which in my opinion is the easiest way to cap hockey, let me know and I can put you on with one of the sponsors. I can probably even still get you that 20% bonus at Spinner Sports, they have very good moneylines in hockey.
Hope this helps.
MC
thanks mcash hook it up on the 20% bonus, I've been looking for a new book....
Shoot me an email and I will pass you off to Jay at Spinner. 
MC