but whatever you choose use stainless or zinc coated or electroplated. when screwing towards the ends it is best to predrill the holes.
I personally do not work with synthetic material, but I know you can either nail or screw the material down. If nailing use a ring shanked, hot dipped in glue and galv.
Screwing allows you to remove the material for some reason and neatly re apply it. Nailing will not allow this lux.