hi.i skinned my stonefly with the 6oz polyester:no experience with other fabric,so i can t compare
the 6oz is very smooth and easy enough to stretch(my lady did the bad job pulling and getting blisters while,on the other side of the boat,i was gently stapling).i got a lot of wrinkles due probably by the wrong stapples(the square end one)but i did get rid of them later with a little ironing :the skin got really tight as a drum
i am not very proud of the painting though:after 5coats,it still is looking kind of goose skin.to bad for me.
now i ve got to wait a week or so,to let the paint getting hard.
i am getting a little nervous now,the weather is really fair,and in a few weeks,it will be a little to crowed on the lake,unless a go paddling at 5 in the morning.
see you next