Looking at a 2000 PLaybuoy 18' pontoon with a Mercury 40hp two-stroke engine, sitting on a loadrite trailer. Everything is 2000 model year. Seller was asking 7500 but is agreeable to 5900. Boat is in great shape except for one seat needing attention - vinyl is cracked. I was ready to buy but have second thoughts about the two stroke motor. Wife and I just like to cruise around at slower speeds and I thought a 4 stroke would be smoother and quieter in those conditions. Any thoughts from anyone would be appreciated. Thanks in advance.