Guys I have the 150 with a Yamaha 40 and it will run at 28-30 @ 5900 rpm (WOT) with me and fishing gear, there's also no problem getting up on a plane.
However I have added a Hydrofoil fin to the lower unit, I use the 300 series.
My prop size is 11 5/8 x 11 stock aluminum Yamaha prop and I get a bit over 8 mpg if I don't run it too hard.
http://www.basspro.com/webapp/wcs/st...002000_200-2-7
