i have never used it in washington state, but being from back east. we would locate a flock the evening before the opener usually while bowhuntng. someone would see a flock roost. and we would scatter them out of the roost in early morning. good solid yelping on a box call and keekee run on a diaphram was magic.like mentioned before the key is to get a good scatter in all directions. i would sit down right at the scatter point give them a good 30 min . u will herar them start calling trying to flock back up. be ready because alot of tmes they come in on a run. even had them fly in before. thanks for your time strut