The feedback on hydration was beyond what I expected. I want to thank you all that took the time to share your insight. After going through all the details in your comments there was not a clear cut solution. I am working on a design that will be a blend of all of the comments.
Who will get a hat? I think it is only fair to send one to everyone who posted a comment on hydration. I will send you an email for your address. These will go out next week.
The Hydration Design concept:
Ports on both sides
3 to 4 liter capacity
Flexible drink tube routing over the shoulder and under the arm
Easy access for refill
If I am missing anything please let me know. I appreciate all of the input.