re: Hoists, G80, Beefing Up, Rabbit Trails. . . .

So is the goal to hang the hoist from the beam you added that goes perpendicular to the bottom chords (the bottom of the trusses)?  I am not an engineer but I do not think that much of the load will be transferred past the first pair of joists, at least not unless those joists start to fail.   From what I remember while researching whether I could (should) hang a hoist from my garage ceiling, the web (diagonals) that connects to the bottom and top chords are normally in compression and by hanging significant weight from them you may be changing that to tension.   If I understand it, that means that instead of the bottom chord supporting the roof, the roof is now supporting the bottom cord which it is not designed to do.    My 2 cents.