Thanks Nick, that was pretty much my take on it too. It's being marketed locally to some friends paddling scratched and gouged tupperware with some pretty big claims.

: The stuff probably does what it claims. But there are several steps that will
: have more of an effect and you should do first.

: #1 is get strong. If you want to go faster and get less tired, tune up the
: motor. Good, strong technique will beat goop on the hull every time. This
: will take the most effort, but has the best payoff. If you think you have
: done all you can do in this regard, go to #2.

: #2 Paddle a more efficient design. An efficient design will among other
: things have low wetted surface area. The less surface for water to rub
: against, the less area you would need to cover with goop.

: #3 Make your hull as smooth as fair as possible. A poor sanding job will
: introduce a lot of friction that no goop will be able to overcome.

: #4 Keep your boat unscratched. There is no point in a smooth hull if you just
: go and scratch it up. No goop will be able to fill in the results of
: running over a rock.

: #5 Keep the hull clean. Goop won't help if there is other crud on the boat
: already.

: If you have all these things taken care of some magic goop may have a chance
: of making a small fractional difference. I can see a racer who keeps
: losing by 1/2 a boat length looking for any advantage trying some of the
: goop, for anyone else it probably won't make a noticable difference.