Voy,
I have rolls of that stuff leftover from my motorbike racing days. If attached to the underside it will sooner or later fall off and end up on the turbine so I have not used it plus it will trap even more heat. I am working on getting a special spinner that will force air into the nacelle as well as make some snooty looking exhaust ports on the cowing top.
R & D baby! LOL
Beave