DP…I’m no expert at this…but I had a similar problem with my 17′ Angler SS.
Here’s a couple things to try before lowering the motor…
First off…is it new? If so…let your dealer handle it.
Load – Do you notice a differance when you have a full tank of gas as to when it’s 1/4 full…this helps determine what the reason is…
What is in your boat…for extra weight…how big is your anchor and where do you store it.
Lastly what prop do you have on it now.
I went to a stainless prop and change the pitch…that stopped the bouncing…but now I have a terrable hole shot when my gas tank is full and I have two people in the boat. But since I’m not a racer…it really doesn’t bother me…
For yours…just need a little more info…and I’m sure someone will be able to help ya here!