You can see my Gathering (fishing) fatigue testing here:
http://www.disciplesoftheland.com/fo...?g=posts&t=252

Basically I can show that there is:

* A set number of sucessful gathering actions allowed before you hit the fatigue (Fatigue is not 100% fail, but its really high).
* That the passage of time since your last sucess increases the number of available sucesses (your POOL if you will).
* That 12 hours _appears_ to be the amount of time (from last sucess) for your POOL to reach its CAP.

As far as the exact numbers, my results are in the post listed...but it seemed to be more math than i wanted to do to get the exact formulas. All i need to know is that when i cap out and hit fatigue, i've got 12 hours before I best go back out and do it again. I agree, this is inconvienant as a supplier of fishys...but the alternative is countless bots creating a steady flow of resources making it pointless to do it yourself/make any gil off it (despite the uleslessness of gil >.>) etc.