I don't have much experience in building stalls and the like. However, I have seen how horses kick inside the stall, doesn't it seem like the lecan itself is a bit weak for this? I mean, it only takes a small blow with something hard for some leca to come loose. Considering these kicks, and with shod hooves, I don't think it will hold up for long. It won't look nice after a while anyway. Better is probably concrete stone. There should be a special hollow stone that you "thread" onto standing reinforcement bars that are bolted to the ground slab. Finally, it is filled with mortar. But you can probably use regular concrete hollow blocks 60x20x20 as well. Otherwise, you can place an L-iron along the bottom of the wall that you bolt down.
