I installed a vertical HF antenna in my back yard a few weeks ago and decided not to bury the radials immediately for testing purposes, etc. I have had to move them quite a few times now for when I cut the grass or when forget to over them. Additionally, my backyard looks so nice, I couldn't bare to take a shovel to my backyard lawn... So I was going to buy the radial wire anchor pins from DX Engineering when I found a better option at Lowe's - aluminum chain link Fence ties! I bent them to the shape of a staple and pushed them into the ground. Now my radials will stay down, it didn't require much work and it was cheaper than the radial wire anchor pins (sorry DX Engineering)... Just wanted to share this tip with everyone else!