"No more squares in Sports Betting?"

It is not impossible, but it certainly is not easier. Books are much quicker to limit Books are much quicker to block NFL teasers Books have blocked most correlated parlays Lines all look identical Limits on beatable checker sports are lower. It's still possible to grind out money, but 5-10 years ago it was nearly impossible to lose.
What has been written though IMO just tells me the ways it is harder to win out here and doesn't cover why it is easier to win out here than it has been. 1. Development of sports betting exchanges. I use Matchbook as an example and five years ago it probably wasn't involved in my day to day betting as much as it is now. 10 years ago it didn't even exist. It is a huge game changer. On an average baseball day it saves me hundreds of dollars a day. It isn't going to work for initiation of many plays but if you want to counter where you've lost an advantage I don't see how a betting exchange doesn't go a long way into doing that. If you're a handicapper you're benchmark winning percentage to win at this has gone way down. For property arbitrage a betting exchange can increase scalping or middling profits signficantly. Numbers that aren't even "off" can often be wagered upon as if they are because the exchange has such good value the opposite way. 2. There is a subset of handicappers who to me haven't slowed down their plays at all despite a "tight" market. RAS did send a note saying totals are harder to beat this year. I honestly don't even know if he just wasn't catering to all of the negative attention he was getting or generally believed it. Every day he looks at that board and it seems he has several plays. Most handicappers that I look at are the same way. Dan Gordon pretty long time respected handicapper many times including in his book writes that the line is easier to beat nowadays then before. I have never seen Dr. Bob lament that he can't win at this. To the contrary he goes right into your grill and says "I've won before and I'm going to win again" and he probably doesn't have a clue about some of the things you're talking about about these advantages you had. I'm not sure I believe #2 to be true but certainly I've noted it. The key is many things that were easily beatable IMO were for small amounts of money anyway. Books always limited me after awhile. Smaller sports had smaller limits anyway back then. Yes, it could be smaller now but still small. Correlated parlays? Not sure I ever knew any more than a few books that took those and at one of them I didn't want to do it since I was scared they'd throw me out and I wouldn't be able to bet football. IMO but at all the A rated books anyway haven't the lines always looked alike? If I see a move at Pinnacle, I'm not logging into Bet Cris trying to beat them to it and never have. But for big games and big sports where I can bet I believe I'm in an even better position than ever before. And I've only been to the M Resort once. And that sounds pretty good.
Yes the exchanges are huge well said Skeeter. The guys I know that win every year betting sports are not doing what they were doing 3 years ...some even 2 years ago, because the stuff does not work anymore. This is why you have to constantly be charting methods, data, coaching tendencies,etc because the stuff just does not last. If you work hard and evolve, it is not that hard to win.