Two examples I have seen this year...

They called for the ballots at Garner Edgerton as soon as the 103's were finished....(I have been there last 3 years, same procedure) and after every other final they announced a reminder for the coaches to turn them in. I'm sure some / most were turned in before all the wrestling was completed, as some teams left early.

At Tulsa Union they specifically told coaches to wait till all the finals were complete to turn in the ballot.

I prefer the second process.