I use 12" common nails and 24" rods depending on the wind, In sub zero conditions the cold will follow the peg down into the ground and freeze it there, so leave enough sticking up to give them a tap further in to break them loose before pulling.
It would seem Ian that I have no pix of the other side strangly enough.
You wouldnt go wrong with anything made by Hilleberg but the price may make you wince ,