While driving the several hours back home with my new canoe lashed to the roof of my truck with four of the small foam wedge things and straps running through the cab, it rained heavily several times. While traveling at freeway speed, no problem. But after I got in traffic and slowed down, rain was running along the straps into the truck cab and wetting out the headliner. I also wasn't real happy with the security of that set up so I decided to build my own rack.
I wanted something that would do double-duty as a storage rack in the garage when removed from the truck. It also had to positively "lock" the canoe in place and I wanted it to be as aerodynamic as possible. The result is mostly (and obviously) 2-by lumber ripped to custom widths plus some douglas fir with a bit of exterior plywood stiffening panels. I used a super tough 1/2" closed cell floor foam for padding. I don't know how much it weighs, but it's easier to lift than the 35 pound canoe and it is rock solid at over 50 mph. (Almost certainly rock solid at way over 50, I just haven't gone that fast with it yet.
). I am pleased with the results. It's quick and easy to load and secure and locks the boat exactly in what I think is an optimal position.
Jim
I wanted something that would do double-duty as a storage rack in the garage when removed from the truck. It also had to positively "lock" the canoe in place and I wanted it to be as aerodynamic as possible. The result is mostly (and obviously) 2-by lumber ripped to custom widths plus some douglas fir with a bit of exterior plywood stiffening panels. I used a super tough 1/2" closed cell floor foam for padding. I don't know how much it weighs, but it's easier to lift than the 35 pound canoe and it is rock solid at over 50 mph. (Almost certainly rock solid at way over 50, I just haven't gone that fast with it yet.

Jim