Pull up door thoughts

I hope my words make sense because I tried drawing a diagram and it just made things more confusing. But I'd like some input on my planned carport doors.

My openings on the car port are 23 feet wide, and 9 feet tall at the peak, 8 feet tall on the sides.I have billboard vinyls cut to 12x25 feet. 

my thought on this is to:

1. Run grommets across the bottom and again 6 inches up. This will hold 1"conduit with eye bolts on it every 3 feet. Zip tie the conduit into the billboard through the grommets.

2. Run another set of grommets across the whole width 3 feet up, and again at 6 feet.

3. Attach the rope to the eye bolts and feed it through the grommets at 3 and 6 feet. 

4. After the 6 feet pass through, I want to join the rope together into one piece.

5. Take the one piece and run it through a central ceiling mounted pully, then to a boat cleat. 

In theory, this will let me pull one rope that lifts the entire door out of the way and lets me attach it to the car port. 

I'm also thinking of adding a hole on either side to cut back on wind whipping everything around. 

so far, to me, that sounds like a good plan that will work. 

​​​​​​but there is a step I'm missing. How to attach the top of the door to the carport. I'm considering grommets and bolts, but I don't want to drill holes in the roof if I don't have to. I know tape won't hold worth a E36 M3, so it probably will have to be a physical connection. 

does this make sense? Could there be a better way? 

On my fabric building there are sleeves in the door every couple of feet and a long conduit gets fed through each.  On both ends of the conduits is a plastic bushing that fits inside the conduit and has a center hole the right size for a garage door roller.  On each side of the opening is a garage door track. The bottom conduit is pretty heavy and sits an inch or so off the ground to pull everything tight.  A small cable feeds from one side of the bottom conduit, over a pulley, across the top of the doorway,  and over another pulley with the cable from that side, and both attach to a boat winch at waist height just inside the man door.  

Open man door, crank winch, fabric door opens.  There are holes in the tracks above the bottom conduit for padlocks or pins to lock the door shut, and it's not a bad setup. 

Get a pint of HH-66 and primer to make sleeves instead of the grommets. 

Doors on a carport ?

In reply to iceracer :

It's where most of my fabrication tools and all of my work space is. 

Being able to cut down on wind and rain while increasing my light with the white side of the billboard on the inside sounds like a good plan, and should let me spend more time down there. 

Makes sense

Spent a little time looking at things again today once the cop car went away.

There's a lip on both ends of the carport roof that I can fit a 2x4 in. I'll spring for treated lumber. But I should be able to bolt the doors through the roof to the 2x4, and seal the holes with silicone.