Plastic tent canvass attachment point to trailer

Well I did hear back from canvassreplacements.com and they initially thought it was a J hook initially but realize now it isn't.

I did find one tag. It is from
Shademaster Products in Santee CA but the one number I have doesn't appear to be working any longer.

BearCreek is a little stumped as well. They say they used to see them on vintage trailers but don't have anything now. They have had to repair one before and say that they had to sew one back together.

There has to be a solution here