Looking at maybe getting a new jon boat and mating it with my current motor Merc 25hp two stroke prop at 112lbs. I have it on a Seaark 1448 riveted flat jon now at 245lbs. I can get 4 men on plane and run at good speed, but need to run shallower. Looking at either an Alweld 1648 flat or 1552 with prop tunnel. Both boats are listed at 355lbs. .100" hull. I was looking at a Yamaha 40/30 jet but not sure if a jet would do in our river, it tends to have debris from time to time. Don't want to go any heavier on the hull either, lots of spots where we have to drag the boat. Do you guys think the prop tunnel would gain me much clearance on the prop, or should I just stick with the non tunnel? I've read with a prop tunnel I would need a jack plate and also probably a different pitch prop with more cup. I really just hate to change motors, this little motor is a powerhouse.