i just got back from the lake and had my 3 400 stock bags filled. also had an additional 540 lb full in the passenger side locker and another 150 ish in the floor. we gave it some gas and and couldn't get above 10 mph even revving the engine off perfect pass still wouldn't go. in thinking it could be the prop not having enough butt to push the boat and spinning

also i have an inmarr assault 325 i recently changed the plugs and wires due to it smoking a little but since i swapped it out it got a little worse and smells like its running a rich. what could this be?