I am with Tripod on this one. I guess I maybe old but I don't trust this new stuff. Look how often Slingshots pop a error code when they shouldn't one maybe ones to many. I kind of subscribe to the old Cat and Duck method of navigation when they didn't have all this fancy stuff. If you hadn't heard of it let me explain. I know there are some pilots on here and you might use this as a back up system.
Cat and Duck: Well they carried a cat and a duck when they went flying. If they were in the clouds and got vertigo they would drop a cat out of the cockpit and knew a cat always feel feet first. Then they would throw the duck out. Ducks fly South in the winter and North in the summer so they just had to follow the duck. Worked fine till the duck landed on a pond in the fog.
Later I will tell you about Blue Card pilots maybe.