So I decided to re-do the straps that I had attached to the Dometic. i had tried the pre-made straps that were suggested in one of the other posts. These are the black straps with a rubber exterior. Unfortunately they did not extend above the top of the cooler so I could only use one of them due to the width. So I did a re-work and built the following:
1. Materials -
a. 1 inch hollow core webbing. Found this in the climbing department of an outdoor store. Total of 51 inches
b. 6mmx12 bolts with washers - quantity 8
c. 1/2 wood dowell Cut to 6 1/2 inches
2. Cut the webbing to length of 25 1/2 inches
3. Insert the wooden dowells to the the center of the strap
4. You will need to put two holes through the ends of each length. I used a small butane torch with a soldering tip to burn/melt them through. Anything like that should work. The one hole is about an 1/2 inch from the end and the centers are about 2 inches/50mm.
5. Mount the straps to the cooler
You can see from the photos that they extend above the top of the cooler with enough room for your hands and then lay on the top to the sides so that you can still slide in the side table. Note that I have the Dometic cover on my cooler but should work fine without the cover.
Straps to length with holes.
Straps attached.
Cooler in place