AZKC, well, I was in the same boat as you 1 month ago. From my research, the Jetovator pretty much gives you the ability to point the nozzle down, but not really up. While this will help with your porpissing, you most likely will not be blasting lake lice. The conversion at ADM with the Place Diverter will rob your boat of some serious power.
So, I have gone to plan C. Courtesy of my father, and some friends at work, and some hi tech machinery we will be designing and building one this winter. I do not know how it is going to turn out yet, I have been doing some rough designs on the cad. They are engineers and machinists who love people telling them that it can not be done. Do you have a plan C available to you. It just might be the ticket...Good Luck...Joe