I am currently scratch building a seamaster and was thinking of making it a twin. I was going to use asp25 engines (37.00 each) however I have not seen any twin seamasters with 25s. I have seen one with 36's and he said it jumped off the water and then some with 40's. Do you all think that 25's will big big enough. The plans I am using are the modified Ken Willards? plan. It said that it was reduced from 7 lbs to 5.5lbs. and said not to fly with more than a .40 size. One more question is how low do the seamasters sit in the water? I am trying to design the engine mounts and estimated the water level up 1.5" from the very bottom. I then gave 1 inch clearance from there. Do you think this will be high enough off the water?