National geographic trail maps. Search for it in the App Store its $2.99 and works better then any GPS I've used. You have to download the maps you need to your phone but you can get topo and arial and it works great when you have no service.
100 grain 3 blade, 4 bulls. 2 that were quartering away had good blood trails, the other two were broadside passthroughs with very little blood. Switched to rage 2 blade.