byronmc said..
What fin type ans size have people been using in speed and slalom there in the past
Lessacher LEWoo Rake Duo 30 weedspeed 22cm for 1 hr, C3 19cm Slingshot sym. on IS50 and KA 20 assy for NM and MXR 16/18 for speed runs on CA40. This year I will be using Tribal assy speed 16.5 and Weedspeed 18 -20 sym for blasting.
I have not sailed my slalom board there but I would use 23cm Tribal weedspeed or Lessacher 23/25cm Rake 30 Duo weed.
We have got a 25 Rake 40 Vector and a 25 Lessacher Rake 30 Duo in A-box for the speed tandem too!

I am hoping they are too big!!