Vinyl Top Adhesive

^^^^ Good advice, but around the edges I've never used spray tack, simply because of the "spray" aspect of it. I've always used a brush on vinyl top adhesive. For the bulk of the roof spray tack is fine.

In your case, George, you should be able to get hooked up with a local upholstery shop who can sell it to you by the pint or quart. Mine has it in the five gallon drum and is more than willing to share.

The biggest thing is just like women's stockings of yore: make sure the seams are straight.