Per Bob:
Anybody have any experiences with any of these ?

No but...

Place where I windsurf, they painted the raw wood deck after about 20
years of weathering.

Raised the ambient temperature of the area at least five degrees and
made it painful to walk barefoot on a summer day.

Viz: http://tinyurl.com/nff46zh

(that's a post-Sandy pic... so things are pretty messed up.)
--
Pete Cresswell