Ridecamp: [RC] Update on my mare and need advice.

After a long hiatus in riding because of a medical condition I started riding again about a month ago.  The dressage work and stretching exercises that I started doing really improved my mare's stride.  I was very proud of her on our ride today.  Now I have no doubt she will make a good endurance horse and I'm glad that I didn't sell her.  One problem that made me not sure if I would ever enter an endurance ride any time soon was the lack of time factor.  I can get out to the barn about 3 times a week.  Well, I met a lady today who loves trail riding who would like to part lease my horse.  She is going to keep track of how long and far she rides so I can factor that in to my conditioning program.  Does anyone have a good lease contract that I can use as an example? 
A funny thing happened today.  I just found my old fanny pack bottle holder and tried it out today.  As soon as we started trotting I got lime gatoraide all down my back.  This pack is really made for bicycle riders.  Are there any good ones out there that can stand the jolts of riding?  I really would like the fanny pack type in case I get separtated from my horse.  Thanks for the advice on saddle pads.  I am slowly accumulating all the gear that I need.  "Hi again" to all the Central Florida riders.
Pamela