Dean,
The method best for you depends on your climate and moisture levels.
I'm aware of three alternatives from the original, although the
original vinyl-backed foam stood up for quite a while, and is
probably still available.
Painting is one alternative. The downside to this is the old glue has
to be completely removed down to the fiberglass. This is a bit
difficult due to the uneven texture of the mat surface.
An attractive alternative is to use wood strips with insulatinf foam
in behind, as Chuck Rose did in Lealea.
The route I took was to glue indoor/outdoor mildew proof carpeting.
After three years it still looks good. The only thing I'd do
differently is use a less toxic-smelling glue, as it took several
months for the smell to leave.
Peter
#1331 'Sin Tacha'
The method best for you depends on your climate and moisture levels.