Usually every 25 hp is god for 1-3 mph now that window closes a little for every 25 you go higher from 200hp. So I would say that an A211 w/300 is good for 80-83 light, and 76-79 loaded. Of course you do need to take in consideration, air temp, water temp and hardness, humidity, and elevation. I have not ownerd one, but this is a very educated guess with input from those that have had 300's.