It is quite common to toss the tiller extension overboard and stearing with the parallel pole between the rudders instead (Dang, what was the name of that thingie again!!). Check most Tornado downwind pictures from the last year, and you will se this is the 'rage'.
The same goes for the foot placement, getting the weight as far back as possible..

Lee helm is not bad at all with the gennaker up..

I guess Stephen has some comments about this as well ?