Great video Arson...straight to the point and well filmed.
I got the Blue clones of the Ground Hog stakes from Backwoods Daydreamer. I've not measured them, but I swear they are lighter than the Ground Hogs. I have a feeling they are a softer aluminum, but all this is speculation as I've not had a chance to use them yet. Lastly, I don't think they use the reflective line, though I intend to swap the line out with some lightweight reflective stuff I have.
Since I have several of the Ground Hogs, I'm also looking to modify them by notching them and drilling some holes in them to lighten them up. I have several spares, so I'll try this on a couple and see how they handle my abuse on and after the drill press.