I used two of the small titanium hooks in each corner (I had extras) and with very large rocks placed on top of the corners that seemed to be getting the majority of the wind, they held.
I used an aluminum hook for the rear pole and an X-shaped stake similar to the ones I just bought for the front. These are my only large stakes and both were found. I placed the largest rocks I could find on top of these. There were not a lot of rocks in the immediate area so I went in search of more rocks at a nearby stream. I don't think I could have made stakes from anything in the area.
I was using a Gossamer Gear One. I used that tent for most of the PCT. I remember that it fell down often in So Cal. I thought maybe I had finally gotten good at setting it up after two thousand miles. It just seemed so saggy when I set it up this time. Is it getting old? The panels bowed inward in the wind like, well, spinnaker sails. I swear the front vestibule panels almost rest completely against the mosquito netting when the wind is at rest and everything is as tight as I can get it. They are very loose. I'm thinking of pinching the excess fabric and sewing it so they will be tight. Also, as I was setting it up, it seemed that the knots that hold the four corners were all coming undone. I don't understand how the knots are tied so I did my best to just tie simple knots in order to get the thing set up. With the wind blowing it was a little difficult to figure out how to tie them so that the bottom made a nice tight bathtub and the top had enough line to get it really tight.
To be fair, a couple weeks ago I was camped near San Jacinto in a Lunar Duo and the wind blew so hard up there we had a tent failure that night too. I swore that night if I was ever in similar conditions I wouldn't even try to keep the tent set up. That is why when the first stake blew out I decided to sleep on top of the tent. Also, it was dark when the stake blew out and I couldn't find it.
I was camped in a spot where there were little nooks carved into the chaparral. I first selected a very small spot that seemed relatively calm. I was able to cook dinner without my stove flying away, but there wasn't enough room to set up the tent. I could have slept there out under the stars but there were scary clouds in the sky. I searched for another spot. I found one that really wasn't as sheltered as I hoped and I wasn't really able to set the tent up in the optimal direction. The wind seemed to come from every direction, swirling all around, but mostly either slamming the rear, one side or once in a while, the front.
I kept thinking that night that if I had a tarp, I could have had more options for how to set it up. I wouldn't have been forced to have 125-130 cm high poles forming sails to catch the wind. I could have set the tarp up with my poles collapsed and crawled under. I could have set up one end way deep under the chaparral. I could have folded the tarp in half to form a smaller shelter that might have fit in the first spot I found (my tarp is an 8x10 flat silnylon).
I know I was wishing I had those giant golden nail stakes. I was also thinking that if I had those, I could have wrapped another line around it and staked that line down with two titanium stakes and then placed enormous rocks on top of all three of the stakes. Maybe that would have held. The wind on the PCT at the transition zones between the So Cal mountains and deserts is unbelievable and the sandy soil is hard to get the stakes secure.