Masterbuilt Cookmaster With Flame Blowing Out

Hello,

I have a Masterbuilt Cookmaster, its a single door propane smoker. I am having some trouble keeping the flame lit with the wind here in Iowa. Since the wind is usually present I need to find a way around it. I was thinking of stacking construction/foundation block two levels high or so around the smoker. Has anyone else had to do this or something similar for wind issues? What works best?

Thanks in advance.