Yes. Currently we offer ground posts that should be permanently cemented on the corner poles and every other bow. This elevates the tunnel 12"-18". This set up kit includes brace bands with bolts to attach carabiners for rope guides. 

A 16” (.4m) lift kit will still use the rebar and anchor plates. Below is a video on how they work. 

https://www.youtube.com/watch?v=0yB52WKyC98