I think the T can is necessary evil.

on its good sides you have:

very powerful rudder effect (see the picture of my rudder on full deflection on normal condition ) with this rudder I make all the P-11 and F-11 secuence (included the integrated roll on the M, the half integrated roll on the loop on the P-11, the rolling circle, etc). I only go to high rate rudder on the stall turns

since the deflection is so small, you almost can not see rudder corrections. this is good because you almost can not see the tail moving on corrections

performance on integrated rolls is awesome

but on its downsides:another surface to trim: incidence, position, height.

Tcan increased in my case the required mixing if your plane has rudd to ail and/or rudd to elev. I fly a Xigris C1 and it's former owner tried several sizes, geometries and positions, and he ended up reducing the size of the original ZN line tcan to around 60% span, and left it tied to the cockpit where the original one was installed. guess who was the owner!!!

this Xigris C1 with Tcan is trimmed using triangulation method and is free of mixing without the Tcan and once you install it, it starts to tuck to the canopy and to roll on knife edge flight.

after all and all, i use it and will keep using it so far

hope this helps

Marcelo Velez