It's all down to nose weight. In the good old days when I was still diving we had two dive boats one of which was a dream to tow the other was an absolute bitch because it was too heavy on the nose. We used to have to load the back of the boat up with dive belts to balance it up. Used to get real proper tank slappers if you got it wrong no matter what vehicle was pulling it
Have some OME HD springs, but will give you a lift.