what i have is a 15 ft. 57 lawney, alum. it is just over 4 ft. wide, it is titled as a runabout , have tried doing research ,but to no avil. i guess they were all pretty much generaic , it is closed bow, it had 3 bench seats, i removed the front & middle. the bow is veed but the rest is flat ,with 7 strakes. have a 93 40 hp. johnson,am trying to mount a garmin ff .everything seems to work until i get up around 20 or so mph, then i lose depth, and bottom, but speed remains. any suggestions?
