Fish mojo
01-19-2005, 10:11 AM
1991 4.3 alpha one mercruiser stern drive, 19' spectrum alum v hull. I have a 23 Pitch hi-5 prop(came with the boat). run 4400rpm at 38mph. Is this the right prop? At idle speed in gear it does this weird back and forth directional change- let go of wheel and it turns to port for 20 feet, then corrects and goes to strbd for 20 feet,over and over in a S pattern. I have to keep correcting the track with the steering wheel. Drives me crazy. Any prop suggestions or help for the S pattern thing?