I don't know how many others battle a yard with a significant slope, but it can really be a challenge with prop placement. Here's what I came up with. It's basically the same way your washing machine feet level the washer. A bolt works the corners up or down depending whats needed. For use in the yard, I added 8" spikes that secure the leveler to the yard. I think it'll work. Once it's in place I can mount my prop and fix it directly to the wood platform.