Is it an unwritten rule not to try and middle an nfl game for example with a sportsbook? I'm not talking about using live betting to do this, I'm just referring to regular line movements throughout the week that might present you with an opportunity if you happen to bet a line early. Or even something that might not even be profitable, like teasing both sides of 2-3 games. I haven't dug deep in the terms and conditions of every site but I have read some and haven't seen anything regarding this yet. Any insight would be appreciated. Thanks.