I'm hanging a porch swing, but the beams run the wrong direction for the support hooks. I've looked up in the attic, and there's a 2x4, lying flat, that runs the correct direction. Will that be strong enough to support, say, 500 lbs? Due to the angle of my roof, I can't actually reach the board so there's no hope of supporting it from above.
There's really nothing stopping me from getting a different style of support hook (one that drills into the wood at a single spot instead of two), but if possible, I'd like to use what I've got.