I am In Central Florida, The Swamp Mountain Bike Club plays pretty far back in the woods.
The Balm-Boyette Nature Preserve MTB Trails start TWO MILES down a dirt road.
It's gonna get hot this summer, real hot !
Hydration back packs, like the Camelbak pacs look promising, 3 Liters of the wet stuff on yer back seems like a good start.

Example:
http://shop.camelbak.com/charge-10-l..._c_111_cl_4131
or:
http://shop.camelbak.com/hawg-nv/d/1003_c_111_cl_3900
Penney for your thoughts Back Woods bikers ?