The tactic is used sparingly as although it sometimes creates a breakaway opportunity for the defending team should they manage to take control of the puck and pass it to the floater, it also creates a five-on-four situation (during even strength play) for the attacking team.
This strategy is used infrequently because while it might give the defending team a chance to break away with the puck if they can get control and pass it to the floater, it also creates a five-on-four advantage for the offensive team during even strength play.