[cliff]

Originally Posted by cletrac

I have an original top hoop and it has those pins welded in (see picture) and a wire in the cross hole. What would they be for?

To me it appears that the canvas hood may have had tie down straps that had an eyelet hole in the end of them which slotted over that pin and then a circlip or similar pushed though the hole to hold it in place. This would in effect been a quick and easy method of holding the canvas in place but also a quick way of releasing it for removal as well.