But if Gato can build a ply (note he used 4mm not the recommended 3mm) boat under the "minimum" weight then we are by no means setting the weight at the lightest possible, instead I'd say its pretty realistic. A composite boat will be lighter again. No body will invest in rotomolding tooling until the class is established (it make composite tooling look cheap). So Roto moulding will not be the thing that gets the class off the ground.