-- Last Updated: Jul-02-13 3:45 PM EST --
I made my own and used Yakama's 1/4" lag bolts and their large plastic wing nuts. I had about a half dozen hanging around from over the years.
I semi copied the ones that kaymedic posted above, except for the mounting.
I used a 3" x 6" piece of 3/4" plywood and on the side that goes against the top of the yoke, I used a 3/4 inch forstner bit to go in enough to keep a lock washer and thin nut below the surface of the plywood.
On the top part after I inserted the bolts, I pounded it in so the square portion was embedded below the plywood surface. Then I tightened the whole works down as tight as I could get it, (this will prevent the bolt from turning when the large wing nut is tightened and loosened).
On top of the plywood, I used a 1/2" piece of closed cell foam and on top of that a 4" piece of high density foam.
Nanci added the top vinyl covering and did a great job sewing the four corners, (looks like it came from a factory).
Then we squished it down and wrapped the vinyl under the bottom and stapled it to the plywood with a finishing touch of black gorilla tape over the staples.
The finished product is 2-1/2" high.
When I tighten them down, it is very easy to get good and tight with that big wing nut.
Total cost = zip
If it ever stops raining here, I'll give it sea trials on the road and in the woods and report back how they work.
Cartop Kayak Carriers
Wall Mount Boat Racks
Rescue / Throw Bags
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