One of the hidden benefits of the biplane type that I campaign is that when the cabane strut is parallel with the horizon, the aircraft is at 60 degrees aob.
So all I have to do is pull OR push until the G meter says +2 or -2 and as long as I'm doing anything between 90 and 150mph and I keep cabane in the right place I should fly a level turn, erect or inverted.
Due to precession and p-factor the outside turn can be flown feet off.
Stik