These look bit different
http://anguloboards.com/blog/2009/02/magnum-2009-slalom-board-presentation/
That's good for Mike 
, it's mean is theory is not wrong...
So maybe that's what he needs to do with his... bring the cut further back to the board!
The board turned out great decrepit. Have you had much time on it yet?
The nose on the Angulo is pretty Funky!!!
Well it was only just 35 on trackpoints, doppler said 34.9 or something.
Just afterwards I had a go on a similar sized AB speed board with same sail and fin, and got another half a knot, but it was much more comfortable, due to the lower foot position.
I was interested by the idea of longer water line length giving benefits..... where have I heard that before......
The idea works I reckon, I've been sailing this since September and it works well.
This was an old 9 foot slalom board which never was fast and sat in the rack unused.
I whacked a foot off the front to stop that from blowing out of control in the big gusts.
Then I routed the tail to give the same shape as my home brewed 45cm speed board (which smokes) I took a guess (500mm) at where to put the step (figuring about where the water release is at top speed when its trimmed on its tail....step depth was another guess.... 18mm.
I put the back straps where they are on the 45 in relation to the fin and moved the front straps back to get my feet close together like the 45.
I can't ever remember this board doing much more than 31-32 kts before and now it flies off the wind and is much nicer to sail all round, much more balanced in big gusts and so far has hit 37.5 kts.
I just did it as a bit of an experiment but it's so nice to sail I find myself using it a lot.
Recently I hopped off a session on this and then had 30 minutes on the latest Carbon Art SL58 ,which is a really nice race board but it's not nearly as free as the stepped tail and with the same fin, feels quite draggy by comparison.
This has got me thinking and my new race board is probably going to be a stepper, to see if I can get the drag down on a slalom board.
They may look butt ugly but from what I've seen they can go great.
