The kit has wing fences and a T-canalizer included. I haven't mounted either, however I am making a canalizer myself.

In my opninion, the included canalizer and fences are really ugly.

The reason I'm making a canalizer, is the fact that in the P11 schedule there's a figure M with an integrated half roll/half loop, and the Wind will 'sag' somewhat in the bottom half of this. I'm hoping the canalizer will improve it's performance in that particular manouvre.

Besides what's in the kit, SebArt also offers a 3D stab. Basically it has bigger elevators with balance-tabs.

If I could get one for a reasonable price (say 10~15 euro's) I would try it, just for fun.

However, if you want to fly 3D, don't buy a WindS. It's a pattern ship, not a 3D plane. If you want 3D, you're probably better of with a SebArt Sukhoi, for example.