Definitely want to get tied immobile, the feeling of being out of control adds to the rush.
The blindfold is a good idea also for heightened senses.
The gag while I think is hot as hell having someone wear one or when i do takes trust and since your still a bit new you might want to hold off. Or at least have an agreed upon safety.
So for my wife and I one snap of the fingers means lighten up or move to another area.
Multiple snaps means release me now something is wrong! Cramp or whatever if they snap im rushing to get those restraints off.