Fished offshore Hatteras 3 days in a row. 1st day some dolphin and a 55 lb wahoo, 2nd day more dolphin with a few being gaffers, 3rd day started out with a 200 lb blue marlin release, followed by 2 35 lb dolphin and some more bailer size dolphin. The old Formula performed flawlessly. New 4 blade merc rev 4 prop increased my MPG at cruise from 1.9 mpg to 2.4 mpg over the merc mirage 3 blade. ;D ;D ;D