most 5-9's I've noticed used the C-clips, but I have seen hog rings with pointy nail-like ends on older upholstery that may have been factory .... I'd go with the clips

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot