You’ll hear the
sharps saying “the market gets settled”, “ the market gets more efficient closer to the game”, etc. But I still have been fine waiting line moves out and trying to get the best number near game time. Look at Texans +9.5 last weekend as an example.
Of course if you’ve missed out on a better number for your wager earlier in the week, then passing is best. No sense betting a game late when there was more value earlier.
Betting early also “pot commits” you and that’s not always best when news can surface later. Still though, sharps will try grabbing numbers when they come out and hope they are right more than not.