Pat / fg mechanics

[crpharmacy]

Five man crew NFS level. We had a little sticky situation regards a line shot PAT at the cross bar where our BJ/L hesitated too much in visually signally
the call. We were mentored/clinicianed years ago that if it's good you verbal with your crew mate and try and step out together on the signal. If it is no good ONLY ONE GUY signals it, ie "his" upright or "his" crossbar. Did some google searching and found a 3 page treatise on PAT mechanics from a Southern Nevada Officials Assn which was pretty good but would still like to read some input from this forum. Our questions are on your 5 man crew: Who has the crossbar? Who blows the whistle and kills the play? When does he kill it? What is your mechanic on GOOD or NO GOOD in terms of visual signal? What do you change in any of these areas if it is a FG attempt as opposed to a PAT? THANKS FOR ANY INPUT AND ADVICE!