I heard death via N can take a few hours up to a full day or more in rare circumstances due to a prolonged coma. I came up with some interesting theoretical ways to combine N with drowning to ensure a quicker CTB. I heard loss of consciousness can take up to several minutes, but I believe it's onset is rapid once it begins? Can anyone confirm that loss of consciousness with oral N is rapid after it finally starts?
-Take N as the tide is coming in. Maybe tie yourself to the leg of a pier or lay on a deserted beach. In a murder mystery novel that scared the crap out of me as a kid, a girl and her friend were knocked unconscious via shovel and awoke tied to the legs of a deserted pier as the tide was coming in. Of course, they weren't given N though and their screams eventually became drowned out by the waves.
-chill out on a pool floatie and poke a small hole in it with a pin. Take the N.
-Take the N and as you fall unconscious make sure you land face down in a body of water.
-Take the N lying in a bathtub without turning off the water.
-Take N and swim out into the ocean at night. Riptide preferred.
-Take N with good timing while floating upriver either on your back, on a floatie, or in a kayak/canoe. Pass out. Go over the waterfall

where all the sharp rocks and roaring whitewater rapids await

-Take N before falling into freezing body of water.
-Take N outdoors or in the middle of nowhere in freezing cold or scorching hot weather (hypothermia or hyperthermia) [not drowning but still thought it would accelerate death]
Any other creative ideas or thoughts?