motor questions for newbie

[dirtbag]

just a bit of info on my mini most project you can find the plans for free on the internet www.muskokaseaflea.ca,mine has a wider cockpit than the plans it can fit 2 people I am 200lb and I take friends my size regularly (400lb) I bought a old 18hp for $250 which pushes 2 people about 30mph,the boat took me about 20 hours to build

[X-1hydro]

as much as that sounds cheap and good. its not fast enough for me id just get bored with it then not use it and it would have been a waste of time. plus i want somethin big