Having tested them in the sand. They have to be buried deep and pack down good to the top of the webbing and even then it depends on how large your tent is, for them to hold and how strong the wind is blowing. I'm trying them on a Kelty Sunshade 10'X 10'.. They are made very well, but just wish the pockets were alittle larger/wider. I'll keep them for my smaller tent and hopefully they'll work on both tent and Kelty Sunshade dome....