bill,
I would be very hesitant to do the mast flip up thing from a catamaran. I have done this sucessfully a number of times. I have also put someones mast through the side of my hull in rough seas trying to do this. I don't like doing this from a powerboat in rough weather either. It is very difficult ro aproach safely if it is windy and in big chop/swells.
In flat water and moderate conditions it is not so tough
Eric Anderson