When I fly my Rollers I like to roll the same way I am flying it( so i like to roll to the outside.) The reason I do this is I first put in the rudder to start the roundness of the circle but when i start to roll the rudder is already there so it makes the begining look smooth. I fell the biggest thing to worry about is the rudder in a rollering circle because this is what will make it nice and round and smooth. I try to lead every roll in the roller with rudder so it will give you the nice slow roll effect with out losing altitude. This is just my opinion.

Andrew