Of course there are sweet spots that have all of the criteria for dove to hang out at and these would be newly harvested fields of grain crops. These areas should be scouted as to when and where the dove are entering and exiting. You should look for areas such as ditches, field humps, borders between plowed ground and see if the dove fly over these areas. If so then you know where to place yourself for the hunt.A field hunt generally takes a few people to keep the dove stirred up and flying. Remember that hunting pressure for more than a day or so will make the dove leave the area.
Please note that there are strict federal laws about hunting over baited fields. You should read up on what is considered a baited field before you hunt a field.