Some of us genuflect and remain there until being fed.
It is quite easy to do - and quick - and not at all disruptive.
The trick is to look down to the floor while on the way down and then look up once in position. The lack of eye contact will cause the person giving communion to pause until they see you look up. Thsi technique really works well.
As when genuflecting normally, it is easy to get back up after recieving.
Now: I have a question of protocol. In the case of kneeling to receive or receiving on the tongue (which I do when I receive from the priest himself, but not from an EEM), should one refrain from receiving in both kinds? If one does receive in both kinds, should one kneel twice?
. . . when worlds collide . . .