Are you not able to pair the DuoTrap with your Wahoo?
You do have a crank magnet and wheel magnet installed too don't you? The DuoTrap won't provide anything useful with out them.
You series of posts about DuoTrap seem bizarre to me. I know you said you are not familiar with the world of electronic cyclometers and GPS. But are we even calling the same thing DuoTrap.
Perhaps I have the wrong thing in mind. This is the DuoTrap I am talking about. It's mounted in the left chainstay and there should be a magnet installed on your left crank and a rear wheel spoke.
https://www.trekbikes.com/us/en_US/e...ensor/p/12319/
Disregard the strike outs. Another has recently posted about DuoTrap several times and I came into this thinking it was another post from them.
If you already have the DuoTrap, then another won't be notably better. DuoTrap requires a special made space for it.... doesn't it? So not all bikes can fit it, though it is a cleaner look.
I don't know that adding a speed sensor will make your display more "snappy"