My single door 2 car attached garage is 2x6 trusses spanning across the garage. Sheet rocked with rails & door opener. When constructed, a 2x4 was run in the attic fore & aft 90 degs to trusses. I attached another full length 2x4 with screws on top of the existing 2x4 and wrapped a chain around both, drilled a hole thru the sheetrock just big enough to drop a link thru, and shackled a small chain come-along to that.....I have been lifting my 8ft fibreglass Leer canopy off & on my truck for 5 years now without a quiver from the trusses.....
