Last time I asked a blonde for a sample I got my face slapped !
I reckon Doculam would be heavier than the old dope and castor microfilm but no wrinkles or sagging between the ribs. It goes drum tight. Ideal for indoor and smallish outdoor models. I`m trying some of the 35micron stuff on a Norvel powered "Microbe" 28inch span, so will find out fuel proof capabilities, "heather-proofness" and give a report soon.