The presentation I typically use for the last phase of my 3-Fly routine is to place the last coin to travel into my pocket. This is a quick and [i]clean[/i] presentation, but it can arouse suspicions and it isn't very "flashy" in my mind, even when having the coin travel to a spectators hand. It doesn't have to be flashy, but...
I am wondering if performing a simple coin in small paper envelope vanish would work nicely to give the last phase a little kick. I would think using fire and flash paper would be ideal. My biggest concern is that it could possibly slow the 3-Fly down to a crawl, and it isn't as immediately clean.
What do you think? Have you done something similar?