it would be kind of hard to do since ion effect is only a 1 straight move. The damage they take with each hit will likely destroy them if not.
But sure if they are playing close to the board and you see that ionizing them can make them go off the board then why not. Only thing is that they really have to be facing the board in order to be effective.
To be honest I don't see how ionization would make them fly off the board because if they are in a position that a 1 straight will take them off the board then I don't see how any maneuver could keep them from leaving. Even with a 1 turn they would fly off the edge if they were that close.