If ANYONE is interested in the duct I WILL SEND IT TO YOU FREE OF CHARGE to try even for Placecraft Dragstar. I will send it to you even if you just want to look at it. If someone wants to keep it and try it for a season, fine, they're easy to make.
See sstjet they dont cost a million, plus you dont even have to try it you can just look at it for a season.
It will be interesting to see what HTP comes up with in his testing and the two hulls he picked would be a good test. Then try a couple different locations and openings on how the duct is formed now. It could be interesting. Who is gonna try a gullwing hull??