What I have came up with so far is that Hooter props were made in the 70's by G&R Propeller.The props were all 3 bladed stainless. They are not around anymore. There is no way to tell size unless you know what to look for. Im thinking the numbers on the side might be a ratio or code, somethink like that.I am not sure of the weight of my boat.I would say 1200to1500lbs the boat is rated for 5 persons or 800lbs max HP is 150.I have had 5 people in the boat and it still runs like a scalded dog.But under normal fishing 2 people me my self am a big man 375to390lbs and the guys that go with me are 280to300lbs "we come from good breading stock" LOL.I dont know the top speed I don't have a speedometer on the boat.It rides great, nice and smooth once you trim the motor up its a little stiff in the stearing, but I dont have hydro.stearing either just 2 cables.But what I am looking for is a good alaround prop out the hole and for speed any suggestions on size. Thanks Joe