real good read here
http://lasvegassun.com/blogs/talking-points/2015/jan/23/pro-sports-bettors-fired-super-bowl-props-las-vega/
their manager calls the pros like fezzik who pound the openers at thursday night the sharpest of the sharp. there's a reason everyone in vegas calls fezzik mr props!
“The people that are betting these things, I would classify as the sharpest of the sharp,” Salmons said. “They are interested in getting the most money down that they can on what they think. This is their night to do it.”
The group refines the props over the next 10 days before opening with a betting limit of $2,000. Bettors line up with fortunes and pounce where they find value.
“Through the years, you know these guys as far as, ‘These two or three are in this group, and one or two are in this group,’” Salmons explained. “You’ve got to understand that because all of these guys are good but some of them are really good.”
The feast turns into a tactical tussle that lasted three-and-a-half hours this year before volume started to die down. Gamblers are allowed to place two limit bets at a time, and then sent to the back of the line.