I too liked Dave Browns stuff.. but since you cant get it. I have been using the methond found on the WOW planes website The trick is to keep the 3M 77 spray moving. Dont stay to long in one place.. I have also sound found that going over the foam 3-5 layers of light spray works great!

I have not used the gorilla glue.. with that I would think of a super thin layer on the form and a like mist of water on the sheet would work well.