You specifically asked about Polaris Ride Command App. You would need a smart phone. It would not necessarily need service as snowfish said it is a phone app. You could set up an old phone to run PRC and setup your phone as a hotspot and then connect to that via WIFI. this would use the battery faster. A prepaid phone could work too since you might only need it for a few months at a time. <br><br>With all that said Garmin "Tread" series does the group ride and will track others with the same system just like PRC. But its not cheep... <br><br><br><font face="Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif">The other</font> choices above are great too. or most old cheap GPS will work too but with limitation noted above. You end up loading the VV mapping software over the installed mapping data anyways. Get the largest you can fit in a good viewing spot on your sled. 5" to 6" seem to be good. <br><br><br>Personally what I use is a Garmin Nuvi 2555 (5" screen) with a mount from amazon. I run the Polaris Ride Command App on my phone in my pocket and track the ride. If your with a group you can set up a group ride and see were everyone is on the map as well. <br><br><span style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;">Mount (there are lots of different styles it will depend on your sled and where you want to mount it.</span><br style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;"><span style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;"><a href="https://www.amazon.com/RAM-Zinc-Coated-U-Bolt-Mounting/dp/B0012TWRAO/ref=pd_bxgy_img_1/144-9412385-9884547?pd_rd_w=uHi0d&pf_rd_p=c64372fa-c41c-422e-990d-9e034f73989b&pf_rd_r=P2NBANARAJ2BR7K1PMS9&pd_rd_r=bdd3faf9-f68b-4432-be3f-78c67a33d403&pd_rd_wg=zmdMY&pd_rd_i=B0012TWRAO&psc=1" target="_blank" data-saferedirecturl="https://www.google.com/url?q=https://www.amazon.com/RAM-Zinc-Coated-U-Bolt-Mounting/dp/B0012TWRAO/ref%3Dpd_bxgy_img_1/144-9412385-9884547?pd_rd_w%3DuHi0d%26pf_rd_p%3Dc64372fa-c41c-422e-990d-9e034f73989b%26pf_rd_r%3DP2NBANARAJ2BR7K1PMS9%26pd_rd_r%3Dbdd3faf9-f68b-4432-be3f-78c67a33d403%26pd_rd_wg%3DzmdMY%26pd_rd_i%3DB0012TWRAO%26psc%3D1&source=gmail&ust=1631556601011000&usg=AFQjCNGLAzdH27mwYvH_MKGaJauNu4MozQ">https://www.amazon.com/RAM-<wbr>Zinc-Coated-U-Bolt-Mounting/<wbr>dp/B0012TWRAO/ref=pd_bxgy_img_<wbr>1/144-9412385-9884547?pd_rd_w=<wbr>uHi0d&pf_rd_p=c64372fa-c41c-<wbr>422e-990d-9e034f73989b&pf_rd_<wbr>r=P2NBANARAJ2BR7K1PMS9&pd_rd_<wbr>r=bdd3faf9-f68b-4432-be3f-<wbr>78c67a33d403&pd_rd_wg=zmdMY&<wbr>pd_rd_i=B0012TWRAO&psc=1</a></span><br style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;"><br style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;"><span style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;">Case (They have some of these with handlebar mounts include. Do NOT buy them they are meant for a bicycle. They will not take a beating on a rough trail.) </span><br style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;"><span style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;"><a href="https://www.amazon.com/gp/product/B00AZ7YCGG/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1" target="_blank" data-saferedirecturl="https://www.google.com/url?q=https://www.amazon.com/gp/product/B00AZ7YCGG/ref%3Dppx_yo_dt_b_search_asin_title?ie%3DUTF8%26psc%3D1&source=gmail&ust=1631556601011000&usg=AFQjCNGXHTRX5fxxcpIN7NOc_xp-M5_Yog">https://www.amazon.com/gp/<wbr>product/B00AZ7YCGG/ref=ppx_yo_<wbr>dt_b_search_asin_title?ie=<wbr>UTF8&psc=1</a></span><br style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;"><br style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;"><span style="font-family: Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif;">Lastly, </span>you will need a hardwire kit, the batteries will not last on the GPS units in the cold. Search Amazon for a hard wire kit for whatever GPS you decide to go with. Put you phone in a thin beer koozie in you pocket and the battery will last like it does under normal use.<br><img src="https://forum.johndee.com/vbulletin/attachment.php?attachmentid=63317&stc=1" attachmentid="63317" alt="" id="vbattach_63317" class="previewthumb"><img src="https://forum.johndee.com/vbulletin/attachment.php?attachmentid=63316&stc=1" attachmentid="63316" alt="" id="vbattach_63316" class="previewthumb">