I use ONX when I am out hunting a decent amount and it seems the more I dig into the settings I am finding some really cool features. I am sure there are a lot of you guys that use this so figured I would start a thread on tips and tricks you use in this app. Here are a couple cool features I have figured out and used in the past. I just have the one state membership so I am sure there are even more features on the elite membership.
Tracker: Pretty basic feature, but I use it all the time. I usually turn this on when I enter the woods or am out on the water duck hunting. Helps to see what route you took and to figure out the total miles you have traveled. Just remember to turn it off when you get back to your car. Helps in the morning when its dark out and you can just follow your old track
Slope Angle Shading: Just found this last week. It is under map layers> land access> slope angle. It shades your map to show the severity of the incline. I included a screen shot as well.
Compass Mode/Range Finder: Tools> Compass Mode> Select the range finder symbol and you can pan around and it will show you the approximate range overlaid on the satellite image. I included a screen shot of this as well.