Quote Originally Posted by quikcarl61 View Post
I'm going to disagree about the speed comment, I have a buddy with a 115 mercury pro xs on his 18' nitro and it gps's 55. My 18' aluminum only runs 45. JMHO
Assuming you're running a bass boat style aluminum boat like an Xpress against a fiberglass bass boat, the aluminum should go faster with the same parameters. If you're fishing a deep v vs a "pad" style boat, then yes, you're at a speed disadvantage.