Vic,doesn't look like you have a roof rack.
When I carried my 12' Old Towne I attached it to
the roof rack with ratchet straps.
I did make some "channel stops" to fit over the
frame bars of the rack.
They acted to keep the canoe from moving side to side.
My system worked great.Traveled thousands of miles
with no issues even in cross winds.
Frank
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Vic found photos of my setup.
You could add a bar front and rear
to hold the canoe.
The track down the middle is for the small wheel
on the front of the canoe.Keeps it from sliding off
the side when loading/unloading.
My 2 solar panels sit on each side on the rear section of the rack.