ICamel wrote:
Your Porta Bote has a maximum thickness when folded of 7 inches at the rear and 3 inches at the front. Sounds like it would work if you put the bow portion over the axle(s). With the Porta Bote's resiliency it could easily ride underneath without an enclosure. Just something to keep it secure. That is the direction I would go if you want to keep the Bote and transport it under the trailer.
He said he has an older portabote, so the maximum thickness will be 4 inches. It is only the new boats that have the folding transom that are 7 inches at the stern.
So the advice you've given sounds even more like it would work! :)