Hi..just thinking of buying a roll of down haul rope ,as using a down haul winch does wear them out quick.
some extension have 4 mm 5 & 6 ..
I think the 5 mm might be the pick .?,
then the 4 is easier to cleat off.?
wats the pick.?
I had a bit of a search when I was looking for some new downhaul rope & Marlow Formuline seemed to rate pretty highly. It's readily available from various shops too 
www.marlowropes.com/product/formuline
Thanks guys ...
i might buy 2 metre of each ,see what I like ,then get a roll
alway handy to have ..wetsuit clothes line ,tie the dog up etc..etc..
From the mouth of paul hogan "too good for you mongrels" (as in too good to tie the dog up)
Gotcha ,he's a pure breed .and cost a small fortune.
but still a flea bitten mongrel. 
5mm formuline, I think, is close to 5/32".
Been using it for 4 seasons now, each piece lasting a whole season plus, over 80 days of rigging.
I've also been using formuline now and find that it lasts more than a season. Just for safety though, I flip the line the end of the season so one set lasts me 2 seasons safely.
buy a roll, 100 meters at 6 per meter
seriously it is the best downhaul rope and i think a few manufactuers might suppy it on their extensions.
it lasts forever, and super easy to downhaul.
