Has any one experience of the choco carbon fins for the Atom 100 as I want to upgrade grade the std 36 supplied find to a higher spec.
No experience with Choco fins in the Atom 100 but can vouch for the Black Project Hammer's and Type R's 37.5, 35 and 32.5 are the three that cover 14-30knots for me, The Hammers in Powerbox are very new and you may have to email BP to source one, the type R's are readily available normally.
The BP's will let you push hard and resist spin out and go fast, in a straight line, so if that's what your chasing they are awesome.
From what I understood the Choco carbon fin has been developed by Winheller Prototypes, which I'm using in 38&32cm for my slalom setup. I would recommend getting the fins from Lars directly because he has already updated the fin and made some great progress in the last 2 years.
On the Atom, a 36cm should be a great alrounder.
~Shinobi