ProfessorDonkey said:
The guy at William Hill told me the best time to "hang around" the counter to listen to what people wager is right when the lines come out. The sharps are right there lining up ! I pretend I'm reaching for a pencil and listen to their wager and amount wagered. You can make a lot of dough this way !
Sometimes it benefits to get the line early (as i figured this one would go up on the total), sometimes it's beneficial to wait. At times, it can work against you. Glad it worked with me this time around.