Reverse Paddle Carry
The Way of the Woods p.94
This method is also demonstrated in a YouTube video of Tim Smith of Jack Mountain Bushcraft showcasing this method on a portage on his video, Canoe Expedition Course (7 of 15) (go to the 1:30 mark to see). Seems to work well if you have a quarter thwart positioned in the perfect spot.
Contrast that to the more common carry method illustrated from Homer Halsted's later publication, How to Live in the Woods (1948). An image from page 124 shows the details for lashing and the paddle facing forward so the canoeist can hold the shafts for support...
How to Live in the Woods p124
Montagnais Tying Method
The last version of this is to reverse the paddle position and cross the blades on the forward thwart while lashing the grips to the center. Came across this in the online book, Building the Chippewa Canoe by Robert E. Ritzenthaler.
"Chippewa Portage Method"
The last method is the method I tend to favour with my smaller 14' cedar canvas as it feels less claustrophobic to me. The combination of the tump and contoured yoke make for an easy carry. The blade forward position makes the bow a bit heavy, but this is offset with the fact that I lash my kneeling pad and some other stuff to the seat in the rear and that creates some balance...
My Paddles lashed in for portage