I, temporarily, solved the flat stock storage issue. ;) I moved four sheets of OSB and three sheets of plywood up into the attic of the garage side of shop, where it will become flooring. Add to that a half sheet of 3/4 OSB that will become a shelf sitting flat atop where two support beams come together to meet on the bottom 2x of the trusses (solving the leg support issue). It sits over the top of a wall, which, for purposes of that part of the flooring and storage, is load bearing, so the trusses don't, for the most part, have to suffer the weight.
The flooring replaces the single 2x tying several truss bottoms together and makes walking around up their a cakewalk.
