Hi,
Back to harrows. I found one when clearing brambles. I got another one from a farmer, he had it blocking a hole in one of his hedges. There are quite a few around if you keep your eyes open. It's like when you get a new car. You see the same model everywhere when you didn't see them before. The ones I have are rigidly linked with spikes on one side and with curly hooks for the traces. I use the spiked side in the sand school and the flat side to spread horse poo. If you know anyone coming to France I can get one anytime. They will fit in the back of a Discovery, that's how I picked one up. If not, keep you eyes peeled, gaps in stone walls is another good place.