Good tool....Cellphone .....Download a couple of the free wind indicators from the APPS store... A real good one that shows the scent cone is "ANTLER INASANITY!" Again it be free...Hunt with the wind in your face after you inquire with your Scent Cone APPS where the wind is blowing from and to... Some of you know about this... But the ones that don't... GPS shows right where you are on the phone.. Your map of the land and it gives you the scent cone and the wind speed too...