Hello Everyone! First thing, I am new to this site even though I have frequently searched for info here. I boat on the rivers around Pittsburgh, Pa. I have a 2008 350 Sundancer w/ 8.1 Horizons.. I love the boat. Boating on the river primarily consists of putting around (usually 5-8 MPH) and using the boat as a floating camp and rafting up with other boats. Anyway, I have an opportunity to look at a 420 Sundancer with 6CTA diesels. I tried to research the gas vs diesel as much as possible but I have yet to come across the answer I am looking for, so I am going to ask here. My question is.... Are those engines going to hold up over time by being primarily run around 1000 Rpm going up and down the river with only getting the boat up on plane once or twice a season for an hour or so at a time? I would hate to invest in a bigger boat with diesels and end up ruining them by not letting them open up and run. Any thoughts would be appreciated and thank you!