Frequently I have clients that need to send an email blast to a small subset of users or that need to download files from just 10 or 20 entries. 

There is always the use of an admin-only field, a field hidden from the user and the entrant, and using bulk edit complete to set those fields, not really the best as then you have a deprecated field you likely won't use again. 

This is where the winner types come into play, you can create, assign and delete a winner type at a much more rapid pace and then you can use it to set up filters for bulk downloads and email blasts. 


https://help.getopenwater.com/en/articles/1379146-configure-your-winner-and-finalist-types