I found a dead umbrella and i think i will use that as my skirt material there are no rips just broken metal spars, and it is waterproof as well as very light i have a general idea of how i wil put it together, and inflate it. It will be cut into four to six pieces which will be sewn together and segmented into four seperate air pockets which will be inflated by the centrifugal fans. there will also be holes on the inside so that air can get underneath and keep it hovering.