But basicly you drive them opposite to a mono or another description I've heard is you drive it like a car it will want to roll or tip the way you are turning so you have to corner slowly and always turn down the wave in following seas .a mono hull is more like a motor bike they lean the way your turning so can turn at higher  speeds .i have a cat if you want some pointers you can come out with me sometime and can show you a few simple things 

 Thanks for the tips and offer mate, much appreciated. I was hoping to get it for someone other than myself who has recently purchased a cat but drives it a little dangerously. 

Definetely makes sense what you have mentioned as far as driving it like a car.