To elaborate on the point made by Sunfly3, the ailerons are adequate for normal flying but are rather ineffective for aerobatics. You need to use both rudder and ailerons when you want (or need) fast roll rates.

This may be a taste issue as some guys like more realistic (scale-like) aileron response, which the Rascal delivers. I am used to aerobatic planes and I like to be able to roll very quickly. This plane taught me to use the rudder for something other than crosswind landings and knife edge.

Greg