Can I enforce a time restraint on when picks can no longer be changed?
Yes and you have several choices. For any of NFL or NHL regular season or playoffs you can have picks cut-off as the start time of each game plus or minus a number of minutes or hours you specify. So you could specify picks cut-off as 5 minutes after scheduled game start time, game time itself or an hour or 24 hourse before the start of each game. In NHL playoffs where your players choose the winners of each series, this choice is the first game of each series in each playoff round. For NFL regular season you have two other alternatives. These are making picks cut-off the start time of the first weekend game plus or minus the number of minutes or hours you specify, or having a hard cut-off of Fridays at midnight. In both these cases, Thursday games have picks cut-off as their scheduled start time. For NHL regular season and playoffs and NFL playoffs you have an alternative of making picks cut-off as the start of the first scheduled game plus or minus the number of minutes or hours you
