Does anybody know the ideal depths of school surfaces? In particular the (what i believe to be) basalt type surface, the stuff that looks like a load of grit basically!
I think I would be happier with to deep than ours. Just noticed that if you lightly scuff your foot over the surface in the middle of the school you are straight on to the hard base surface! Track is only slightly better apart from one corner where it is very deep. Yard owner seems to think all it needs is raking!