Yes Dave the width is the thing !! One of the clubs with MS 880 used to take of across the runway ! I had a nose gear stuck in a Cessna 310 going into Biggin Hill. Biggin said you cant land here you''ll block the Runway ! They said we have contacted Manston and they will take you. I called Manston and they said I HAD to have foam !!
They asked what length I required !!! I said what is normal ?? They said will 2,000 feet be OK. So I said yes then orbited while they laid it. It was very quick with 2 tankers but when they finished 2,000 feet of foam on that runway looked very small !!