Our outdoor heep handling area is surfaced with flat, rounded stones about 6cm across. These work very well - are too big to get stuck in the clees, get washed off efficiently with a shower of rain and give good traction. We have a Modulamb sheep handling system. We checked out every manufacturer's offerings at NSA Sheep one year and Modulamb visited and designed it for our space and to our budget. It fits into the lambing shed, has two pens about 12m square (ideal for catching lambs then putting them in a separate pen after worming, etc., a pen with a swing forcing gate which can be slid back on itself to catch and force the next batch, a short race with guillotine gate and anti backing panels, a turnover crate and a two-way shedding gate. Some of the hurdles have sliding or small swing gates to ease access from one area to another. It's saved us countless hours of handling and a very great deal of cursing over the four years we've had it. We dismantle it in late Winter and use various bits to set up the lambing shed for mothering up pens. We ran the sheep through it without catching or doing any tasks three or four times before we first used it for real, so they got the idea wiothout getting stressed.