Thanks for the input guys. I was hoping to spin a 19 pitch 4 blade with cavitation plate at 1 1/2" or more up from bottom but may not be able to do that. 2.3 mpg is less than I was wishing for but is a lot better than the twin 150 carbed Mercs are giving me now. Hoping to finish this project and get back to my '73 20 foot SF that is undergoing a down to the stringers resto. I am going to hang a carbed 150 Evinrude on it and not even worry about the fuel because I don't think it will get used much after I get the Yami on the 23.
I have a great running pair of '99 150 Mercs for sale if anyone is interested.
Bill
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