This is the first bag, so I will still be trying out various ways to construct it. This first try I am pulling a length off the roll , sealing each end first then spot welding it to better maintain a more uniform shape. I have found this end up with far room much material and I ended up with air in the system which is something I want to avoid. I would like to reduce the profile to a single layer of water beads and then fill the voids completely  with water.