Graham,
I have a PA28 going in for paint on Monday so will price up the ones we use give you the size etc…. you might need 2 for it,
Rolls Royce use the paint on theirs
http://www.flightstore.co.uk/prod/X1567/Brands/independent/
Thanks will appreciate that we didnt get it done in time for Chelmsford and it was very slippery especially for 80 year old veterans.