: Assuming you mean why it is not faster and not why it doesn't leak.
: Do you mean you expected it be faster because it is fiberglass?

: Water doesn't care what material you boat is made of. Speed is
: largely related to resistance or friction with the water. Less
: wetted surface with mean more speed (usually). I build skin
: boats, 25 lbs or less but it that doesn't make them noticeably
: faster.

: http://www.kudzucraft.com/articles/weight-speed/index.php

Thanks, Yes, i probably expected it to be faster but i take your point about shape/resistance. The person i got it from mentioned that it had been full of water in the back yard and i was assuming that probably caused the bubbling effect on the surface.
All the best,
Peter