So I was gonna wait until I had a whole palooza project ready, but you guys got me all riled up......
Here is my partially-complete kayak rack solution. I will add final pictures later (when the weather warms up!!) - a few more tidbits to complete.
I had a local aluminum welder-guy bend some 1" tubing into an approximate shape and then weld on some end-loops and a plate that I approximated (and measured) to be where I would want the rail attachment to be. They were about $100 for the four of them.
I bought four Magma grill mounts on ebay and took off the grill parts.
I drilled some holes in the "J" tube plates and some matching holes in the Magma grill mount plates.
Here are the grill mounts bolted to the "J" tube plates.
The clamp of the grill mount wasn't going to be enough to keep the "J" tube up at an angle for the kayaks, so I made some Starboard wedges to distribute the weight.
Here is the completed wedge mounted to one of the plates. Screw holes were tapped into the Magma grill mount plate.
I slid some pool noodles over the 1" tubing for cushioning of the kayaks.
Here is a close up of one of the "J" tubes mounted to the rail.
And here is the set of four almost ready to go.
I have tested everything with our heavy SOT kayaks and it looks like they will be plenty strong.
Lisa has made some Sunbrella covers for the pool noodles in a more appropriate color with cinch ends on them. I don't have a picture of those yet.
The Magma mounts work really well (albeit expensive - even on ebay!) and are easy to put on and take off.
Again, I'll post a few more photos (in a full palooza project posting) when we get back out on the water with the 'yaks, hopefully in a few weeks!
Ray