Whats The Closest apporpriate number of deeks?

Hey im wondering what would be a good amount of deeks for a medium size field?

What is a medium sized field to you? Also, are the geese already in the field or are you trying to get them to come your way instead of the way they are going? We put out everything we have when we got cause if they are in the field, then there are usually a pile of them. We like to match what we see. If there are alot of geese we put out alot of dekes. If it is a pond that just a few come to we put out just a few dekes.