[agereety]

To begin with - I want to thank "Illogical GGC" and "NCangler" for your responses. I am digging the idea of a "what if" box in a big way. I plan to pursue this Triumph with an outboard jet thing all the way. I intend to do it with the help of others - that's how I conduct myself. I can't think of a better "forum" for doing this then what we've got right here.
Here's where I am currently at: I attended the boat show in Boston, and they did not have a 190 Bay there. Soon, I'll be going to the dealership to check out the 190 Bay. I have looked at the Triumph brochure, been all over the internet, etc.., and I can't seem to find a "good" /detailed photo of the transom/underside of a 190 Bay. It would appear that there is a flat transom with a step? I will be researching whether or not that hull design will be well suited to a jet driven outboard. I will then want to know how to achieve it with minimal (the least required) modifications.
It is quite possible that a tunnel is not even necessary. I'll be contacting the place in California that manufacturers jet drives for outboards and many other people regarding this manner. It's not a question of "if" this boat fantasy will become a reality - it is a question of "when" and "how."