While we are working our butt of to get our Nacra Inter 18 to a small 20 knots, I look at video's of Infusions and see them going to 30 knots as if its very easy. Of course it has something to do with our sailing, but I was wondering about a few things:

1) Can anybody share the max speed you have done with an Inter 18? We would like to have some comparison, and like to know where we are aiming at.

2) We have difficulties with improving our speed with the spi, compared to without spi. It seems we end up at the same top speed every time. Should't this go faster?

3) Is there really so much difference with the Infusion?