What they said....

.....and especially for up here with the rocky beaches, what Striperjerk or Bloo said.....
I have 3 home made sandspikes, all cut from PVC pipe.
2 of them are just the PVC, but since I fish Duxbury Beach and some other rocky shores frequently, I made one with the angle iron attached......no way, no how, no matter how hard you try, can you get just the PVC anchored enough thru the rocks on Duxbury Beach or the like....the angle iron (aluminum) does the trick.....
Now in Jersey or Hatteras, or certain spots in Rhody, with just the fine sand, just the PVC pipe is fine......
(oh, BTW, cut the business end of the angle iron to a "V" point, just as you would with the PVC pipe)