I do not have a step by step tutorial but here is how I made the net.
I used the grommet start http://pineapple.myfunforum.org/about1715.html adjusted to fit my water bottle. I used a 1' wide gauge. I made 7 loops which with the drop knot made 8 loops (meshes) around.
I tied 12 rows which was sufficient to cover my water bottle.
To make the handle I started tying again but only tied into the first 3 meshes (leaving 4)
After 7 rows I finished it the same way I finished the modification to the net bag discussed here http://pineapple.myfunforum.org/about1865.html, step #4.
The final knot was tied into the bag rather than into the handle as shown in the example. Obviously tie into only one mesh at a time when tying into the body of the net.