FWIW, I use a 30" folding crate when I do PnP missions.
I'm able to load & open the crate once positioned in the rear baggage area of my 7. I've cut out the crate top section & lined the rough edges with vinyl tubing. This enables me to top load dogs up to about 25 lbs.
Danny "RoadRunner" Landry
Morphed RV7(formally 7A), N20DL, PnP Pilot
2019 Donation Paid