Freedom Brand Wolf Fang Earth Anchors have a large surface area and were designed by Clint Locklear to be tough enough to be used in all soil conditions, including frozen ground. Once set, this anchor stays put.
WOW! These beat any other earth anchor available. They hold in mud with 24 of cable, sand, and any type of black earth soil. They drive in pretty easily. I recommend driving a few inches farther so when you pull on them to set them you dont have bunch of cable sticking out that will cause bedding issues.