Ron Jackson wrote:

So, I am thinking the sand may keep the laterite contained better than
the gravel would do. Is my thinking correct here... or is there an
even better solution that would also be relatively inexpensive?


Did you see my post about traction sand in r.a.f.misc yesterday? It's
cheap, coarser than most sand, and smaller than pet store gravel.



--
It's turtles, all the way down