Reply by derosa

I took three sets of 2×4 (mine were longer, 2 would work for you) and laid one set upright on the bottom equally spaced apart and put the first set of stickers on these; before laying them down I drilled a hole into the ends towards the bottom that the fixed end of the clamp would fit through. I then stacked and stickered as normal and on the top stickers put on another set of 2×4s, the don’t need to be drilled since the clamp pad can go right on the top of the board. My stack was 4 boards wide so I also had a set of clamps down thew middle, so I used 9 24” clamps which necessitated a HF purchase.
Yours looks short enough to go 2 boards wide so you don’t need a clamp in the middle and short enough to just need to clamp the ends, just give all the clamps a little tightening ever 4-5 days. I had initially tried just using a couple hundred lbs of weight and they were still warping badly after a few weeks, the clamps removed most of the warping after using them for the rest of the drying.

-- --Rev. Russ in NY-- A posse ad esse