I cut the shape out of the marine carpet and then had a mate help who own's B!tch'n Stitch'n auto upholstery in canberra who has a specail sprey on adhesive (using a spreygun) to hold it.. (i'll try find out what the name of the adhesive is for you)

In the corrugations on the sides spare marine carpet was used to fill the corrugations to make is smooth first then use one big piece to cover it all the way around as the tail gate is welded and i am making up an aluminium hard cover that i will tig together it was to just make it a much nicer look..

As for the marine carpet on the bottom its the same shade as you may see as the sides but has a ripple effect in it.. the carpet on the downwards side has larger ripples and fit into the grooves of the corrugations for a smooth finish and a small amount of adhesive to hold it in place..

The tub only took approx an hour to do..

I have still not finished it off i am getting a 'J' Piece of aluminum to put on the topside of the carpet (top of tray) and bend it around the corners of the tray to have a complete nice finish and Polish it up