bh007, Your 1 downside is one of the main reasons I wanted to try some sort of prop tunnel. LOUD! Since I'm trying to sneak into some areas for bowhunting, stealth is a concern. the 2 main areas that I will hunting are not rocky, just moderately shallow 1-2'. I'm considering a using a jet to get me most of the way and then trolling motor the last 200-300 yds. The really shallow stuff I fish is rocky so it looks like a jet is my only option. I was looking an option that could do it all. shallow running, good gas mileage, stealthy(quiet),efficient IE- not a 60/90 motor(full HP rating), and prop driven. I was hoping a prop tunnel with a couple jack plates on the back could do everything I'm looking for in a river boat.