After much thought, I have given up the idea of putting any of my canoes on the roof of the SMB. It's simply too much trouble even with the lighter boats, not to speak of the 70 pound whitewater canoe. Besides, they all would cover the solar panels, and free energy is a must for cold drinks.
So I'm researching a combo raft and canoe trailer, not that I would ever carry both types of boats at the same time. I have an old raft trailer, which is useless for carrying the canoes, so I am looking for something that could convert back and forth, depending on what I am towing.
I suspect I will have to buy something for the raft and customize it myself, but I thought I would fish around for ideas first.
And for you hard core desert SMBers out there, rafts and canoes are what you use when you have enough water to fill a river.
2006 Baja Tan SMB 4X4 EB50 PH 6LPSD
Mohawk Royalex Solo 14 foot canoe (light white-water)
Mad River Kevlar Explorer 17 foot canoe (flat water)
Dagger Royalex Legend 16 foot canoe (white-water)
Maravia New Wave 13.5 foot raft (fishing and white-water)