Make sure your base is nice smooth flat and dry. That is your main concern. If its bumpy, up hill, or sticky then your horse can get hurt quickly. I've helped set up arenas for years now and still get paid too. As far as your footing goes yes till it up. It will provide some shock absorbant for your horse. If you want to go fancy and spend money then a good 30% fine grain sand to a good 70% mixed dirt works great but again it will cost you some money. Dirt is just fine though. Many arenas in the US that host NRHA shows have 100% dirt footings.
Last edited by SouthernTrails; 10-12-2013 at 12:08 AM.