I would check your tach before buying a new prop.
On a prop calculator, if you are spinning a 26P prop 5200rpm with a slip of 15%, you would be going over 72mph. Not happening with a 350mag in a toon.
playcraft 26 powertoon what prop are you guys running ? We can spin the stock 24p 5600 rpm and the 26p 5200rpm looking for a better cruising rpm what will the 28p do (buy the way 350mag engine)
I would check your tach before buying a new prop.
On a prop calculator, if you are spinning a 26P prop 5200rpm with a slip of 15%, you would be going over 72mph. Not happening with a 350mag in a toon.
is it a 1.50 ratio, if so you are haul'n
1.80 drive ratio 54 mph light load 3 and 20 gallons of gas