In reply to Busby:
Had considered scaffold tubes as well as it's something i can easily "acquire" from site, was more thinking of spots where there might not be as much top soil as I'd like therefore I could get better holding power by using a stake of reduced length. (I did my best to avoid innuendo there but I await the inevitable)....
As for the legs comment I was referring to the bit of right-angle galv steel measuring 50mmx50mm and being cut to 1000mm lengths, same idea as a snowstake in principal.
Also cheers to discosucks for the article, an interesting read with some impressive results!
Any further feedback would be more than welcome!