Coincidetally, my wife put a canoe on our EX35 last week. We only had 48 hours to come up with something so this is what we did for front and back: Got two short bungie cords with wide-opening, rubber coated hooks. Both hooks on each bungie cord caught well under the rear hatch and under the hood. Used ratcheted belts to secure front and back as well as the midsection.
You're right, a 'V' configuration would have been more secure -- and we'll devise something like that next time.
Two pics at:
http://gallery.mac.com/etorres...sel=0
espressomac
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