And it's a bit confusing-sounding, but what you'll actually want to get is ¾-inch clean crushed stone, not real gravel. Clean crushed stone has larger, more irregular edges than gravel's ...

The average wood fence post seems to be a square 4-by-4 or 6-by-6-inch timber ... The trick I discovered is to use crushed, angular gravel to trick the wind into thinking a massive fence post ...