So - if I was not worried about it blowing over in the wind, or concerned that it would last forever - I feel like I see lots of people putting the 4x4 posts directly on the ground. I understand that would cause eventually rot, and I've read putting the 4x4 posts directly on concrete could cause rot. What If I used a product like "CPS Composite Plastic Standoff for 4x4 Nominal Lumber" attached photo. This seems like it would at least keep the post from being directly sitting on top of water. I also looked at some people using a rubber coating like flexseal on the bottoms of the posts where it touches the ground. I know lots of people are building these to last a long time, but maybe in 8-10 years I'll want to do something different with the build anyway?