I made a set similar to the ones in Guran's post, using steel from a spring tooth harrow, but I made them with long flat bottomed round topped spurs. I tried them out with some old pads and they worked pretty good. Rain has had me stuck inside for a couple of days so I have been working on proper leather for them. I have a big take down for next week that will require several hours on spikes, that should give me plenty of time to see if I like them.