I just used scrap foam
first get your seat adjusted for your paddle style
There is a standard thickness of foam that is perfect for the height of the JK center rod.
Use your own measurements to size two strips of foam to fit side by side over your kayak center rod
use your own measurements to cut a piece of foam to fit over the kayak center wide and hold your water bottle
use your own measurements to cut two sections of foam to cradle your water bottle.
go to lowes or home depot and get the velcro strips
velcro the foam setup to the center rod
velcro the water bottle to secure it into the foam cradle
see the photos for examples
also note the extra glue around the seat air tube. I have had these pull out several times. put on the extra glue around the flat part and along the tube and no problems since. This is a weak spot on the air tube design by JK.
I just used scrap foam. I am sure others can make a better holder than I have, but mine have worked just fine for over a year.



