As I am swiftly finding out. By the way, my brother took the boat out. He said with the 70 horse motor we put on the boat, it was going 45 knots. the thirty would only push it about 12 and could never get it up on a plane. Of course when he got it home, that's when he said he noticed the axle was cracked. At least he got it home first without boat all over the highway.