Hi Randy,
That strap can be fitted many ways. I have fitted two tops so far. The second time around I had to re-do the front because the rivets were showing under the roof at the front bow. Pop-rivet it so as to fold the strap over them towards the back of the car.
The middle bow was not riveted on either of the two tops I did.
The most important issue with a roof is that the side windows sit well into it. My roof may sag, but it keeps me dry. I had to reweld the roof’s side legs for one of my two cars. Some frames must just have been welded wrong at the factiory. I see many cars like mine was, with a wide gap between the roof and the window near the door handles. It makes the car unbearable to drive in the cold or in the rain. And that is a pity.
Cheers, Gilles