HA tail at minus 1 - set and forget. Just change front foil now. That is where most of us have settled now around our circle of foilers anyhow. I'm on 85/60 fuse but son on 75/50 fuse. Same same with tail. Kobo is right - took some adjustment with turns compared to V tail, but it turns good enough and the pump factor is a no brainer comparatively. It's night and day as far as I'm concerned pump and glide wise.
ps the Ha tail also breathes new life into the HS wings as well.
we just need some front wings in between the HS and HA now.

(I figured if I say it enough in enough places it could happen).