Mechanics Adjustments in MN

[mnref]

Just had our state league rules interpretation meeting here in MN. We do a few mechanics different from the 5-man Fed manual ...

1. Punts - Umpire lines up in backfield (saves him from dodging players running downfield - similar to nfl a few yrs ago)

2. PAT and FG attempts (inside 15 yd line) - Umpire goes underneath post with back judge. (this keeps the goal line covered on LJ's side if a fake/fumbled snap/etc)

3. First down is gained inbounds near the sidelines - wings are supposed to stop clock immediately...i had always been taught the "wind twice then kill clock" to indicate play ended inbounds. This stops clock immediately and saves time for offense. Wing can then indicate to R to start clock at RFP.

Wanted to get your guys' thoughts and see if any other states/associations have other or similar mechanics changes