This summer, I will be taking my Eureka Apex 2XT tent to Philmont. It's a nice three season tent suitable for backpacking, but the stakes are pretty bad (picture 1). The tent comes with a set of 7" steel stakes that bend pretty easily.
Picture 1 - Steel Tent Stakes (before and after)
On past weekend camp outs, I have replaced them with similar length aluminum stakes, which cost about $1.00 each (picture 2) . These work well in normal soil and are definitely more durable than the thin steel ones. After a few uses in rocky ground, they will also bend.
Picture 2 - Aluminum Tent Stake
For Philmont, I picked up a set of y-shaped aluminum stakes (picture 3). They cost a little more than $2.00 apiece on average,but they are your best bet on an extended camp out.
Picture 3 - Aluminum Y-Shape Tent Stake
The Philmont gear list suggests bringing ten stakes per person, which works out to twenty stakes per tent. I don't think that many are necessary. Philmont is all about taking what you need and no more. My suggestion is that you carry one and a half times as many stakes as are required to set up your tent. My tent requires six stakes, so I will take nine. Actually, I will probably take ten, with both me and my tent mate carrying five each. Tent stakes seem like a little thing when you are packing, but it is worth the extra money to buy good ones.