Any arena experts who can help me with my arena surface? We are too deep in areas, too hard in areas, and hard clumps underneath. Used to have the best surface and when it needed replacing our arena guy told us to change to a new different product which is awful and crap to groom. It's like a mulch / bark chip now? Used to be a sand / pebble mix. First world problem I know but just hopped off from a jumping session and was so slippery.