We just lost the prop on our boat. It fell off as we were pulling into the dock. Anyone know what I should be looking for as a replacement. I really have no idea what was on it other than it was a 4 blade. The boat is a 1991 javelin 389 with a 150 Johnson fast strike on it. The previous owner told us that he was told that the first motors of this production year were hotter and that it was actually more of a 175hp if that makes a difference. Can anyone give me some idea of what brand, pitch, and diameter we should be looking at to replace it.