Annual reminder on Super Bowl prop betting...avoid any prop that can't be proven in a Box Score. Length of National Anthem, Color of Gatorade, does the MVP Thank God, etc. All of them have some level of subjectivity, and allow a book to grade it in a manner that is most favorable to them if there is any doubt in it. Number of Kelce receptions? Length of National Anthem? Depends, are we counting the extra couple of seconds when the music starts before the singer hits the first note.
Unfortunately, my go-to annual prop is being priced more accurately these days...there was a period there where the "No Safety" was way off every year after a run of Super Bowls with a safety.