Perhaps you could try holding the wheel with just your left or right hand at around 4.5 or 7.5?
This ended up being my solution. My natural position with two hands and eyes straight ahead was useless in avoiding nags. So I've had to learn to let one hand 'hang' to provide the torque (since 2 hands balance each other and don't add torque.)
My issue is I haven't found a position to do so that doesn't bend my wrist in such a way that I get arthritis aching. Alternating helps. A pillow to raise my arm helps, and I'm fine for drives of an hour or so (I don't use FSDb in the city so it is only on highway driving). I haven't had a chance to do a long drive yet with this solution.
My husband's solution is to rest his left arm on his forearm by sticking it through the wheel above the cross bar. My concern is/was that he wouldn't be able to reposition and react fast enough in an emergency but then a deer ran across in front of us (FSDb didn't react at all) and he moved fast enough to grab the wheel with both hands in time as well as braking. Had the car needed to swerve, we think it would have been fine (brakes were enough and the car didn't skid, so that didn't need corrective steering.)