Step 4: The Hoist:
Update #1: I forgot one part: In the last photo, you'll see a 2x4 attached to the lower half of the left end of the 2x8 platform. There's a matching piece attached to the top half of the 2x8 that defines the opening. When these two meet, it stops the upward movement of the platform. if I had planned right, I would have made the stops out of 1x4s at both ends, but since I was building by the seat of my pants, and didn't have any 1x4s, I screwed plywood down about 1 inch over the opening to stop the opposite end. I'll fix this as well.