Mole has posted a comment on my piece on Holdon tent clips. He has experienced some damage when the Holdon clips are subject to strong tension. My experience so far is quite limited, so it would be sensible to be cautious and test these for yourself before using them in stormy weather. On my Duomid, I’ve attached them to the double thickness of the hem and only used shock cord. I would suggest that using something like dyneema cord may not be advisable. The other precaution might be to use an extra piece of material between the Holdon and the tent. Thanks for your comments, Mole.