Just a quick update from someone who has often googled through this forum but never posted. Just finishing painting
a rack and tongue extension. I will use tray style bike racks on this platform. It's solid and could also be used for whatever. The tongue extension is about 14" and improved the towing by adding a bit more positive hitch weight
Attached are photos, I'll update with this bikes on. Jackknife Clearance is the minimum you'd want. I think I'll source a better coupler that welds on and gives me another couple inches.