One of the campers took the opportunity to buy a Max Fan at the
rally and just sent me pictures of the finished project. (He is a lurker here but not yet a joiner) His
Scamp has no air conditioner so the low point on the ceiling would have been the knob on the new fan. To prevent the head knocking he spaced the fan on the roof with a frame made from a PVC 2X2. The frame is mitered, biscuit joined, and epoxied. He ran tests and the epoxy was stronger than PVC solvent. Note that there are many models of the Maxx Fan, I think this one is the Maxx Air 00-07500K Maxx Fan Deluxe with Remote in Smoke, I have the same thing and love it. Being a
Scamp owner, I have never used the remote, I can reach the fan from the bed with my hand.