Regarding the video piece on Paddling.net 23-Oct-2013:
Wow that is really bad advice for how to attach a canoe to a vehicle,
not to mention very dangerous to other drivers. You should always use 2 straps on the bow and at least 2 on the stern, forming an upside down V from the ends of the boat to the outside edges of the bumper. This will keep the boat from moving sideways in a crosswind. Make sure you attach the straps to a solid part of the canoe, not to a grab loop. You should NEVER depend on any car top rack to hold the boat on, whether it is from Thule or Yakima or factory installed. The boat needs to be secured to the vehicle, not the rack. You need 2 straps around the belly of the boat to be safe, whether you have a rack or foam blocks. Passing the belly straps through the windows in your car is not a bad idea but you can't do it through the front doors or you can't open the doors. You should also have 4 straps coming from the rear bumper: 2 attached from opposite ends of the bumper to the end of the boat, the other 2 attached from the bumper to opposite sides of the boat about 6 feet in from the end. You can usually find a gunnel or seat to use as the attachment point. This will keep the boat from flying off the front of your car if you have to make a sudden stop on the freeway. You don't want to slam on the brakes and launch your boat into the car in front of you. Finally, on many cars and trucks, it's very difficult to find solid attachment points on the vehicle, especially if the vehicle has plastic bumpers. Spend some time crawling around under the car looking for places to attach to the frame, and remember that if you put the strap or rope too close to the exhaust pipe it will melt.
MOST IMPORTANT, you should always test how tightly the boat is secured before driving away. Stand in front and try to push it sideways. Try to pull it forward or push it backward. If it is attached well, you
should be able to shake your car a bit by shaking the boat. Then bring
along an extra strap or two, in case your system doesn't work very well
once you get on the road. Put down your coffee cup and hit the brakes
hard on your way out the driveway to make sure you did a good job.
BTW, that loud humming noise at freeway speeds is the straps vibrating. You can get it to stop by putting a twist or two into each strap when you are attaching the boat.