[Sapperwhite]

Try taking a little piece of line and pass it trough the clip, then tie a square knot with the two ends. To finish it, tie an overhand knot with each of the tails so it can't come undone. You should now have a loop big enough to work with. It doesn't have to be pretty, just functional.

If you don't like that, put one end through the eyelet on the clip, then tie a stopper knot so it can't come back through. Then tie a bowline with the free end and use that for the loop. You should tie an overhand knot with the tail in the bowline so it can't come undone during some winter storm and you lose the tarp.

You could even tie a small bowline trough the clip eyelet, and another on the other end of the line for the bungee hook.

There are a thousand ways to go about this, just use simple knots that you already know.