Instead of rubbing strakes and fenders why not have the hull made from that stuff that they use on Ford Ka wings ? If you hit anything just point a hair-dryer at it and it pops back into shape ( it was SWMBO who put the dent in it , honest ! ).
Sorry Jim. You obviously haven't come far enough down to the South West. Doom Bar has a far superior flavour to Spitfire.
I forgot to add into my Doom Bar posting an essential piece of equipment. A supply of Pint Dimple Mugs - no straight sided glasses which spoil the ambiance