To Start a new Hunt on your Garmin Astro 430 or 320 please follow these steps For the Astro 320 & Astro 430: Go to your main menu and select "Start New Hunt". Astro 430 Only: Once you are on the Start New Hunt page you will notice you can select which dogs you would like to start a new hunt with. (This feature is not available with the 320) When using a Astro 430 and only selecting certain dogs the device will only track the dogs that are selected. To track other dogs in your dog list you may need to start a new hunt and select all the dogs, or you can go into the dog info page and press the menu> then Start Tracking.