Ejector can be sustained....CoasterKrazy actually makes a valid point!
Floater airtime refers to 0g's, where you are not being "ejected" from the seat by any means of negative force, yet you are not "glued" to your seat by any means of positive force. Floater is sustained most of the time used so that the weighlessness feeling may be achieved. Milennium Forces' large hills utilize this form of "airtime," atleast from what I have read and heard.
Ejector airtime refers to any instance of air when any negative force acts upon your body and lifts your buttox from your seat. Hence the term "ejector". Ejector airtime is sustained on so many rides, with El Toro and SROS beinh prime examples.
Conclusion: Your ride does not have any 'perfect' floater airtime.