Or, weight it down with cement blocks over the stickers.

Other factors of importance:

1. cover the stack, like with tarp, over the top, and extending off the
sides, to shed water and minimize direct sunshine. Cover as little as
possible.

2. place stack with max southern exposure, and open to wind movement.
Temperature is very important to drying wood, having major impact on
equilibrium content of wood and drying rate.

HTH,
John