Prevent rigidbody from pushing other rigidbody

Hi.

So, I was searc$$anonymous$$ng for solution of my problem, but didn't managed to find any. Let me explain my situation: I have a rigidbody player, that can push another rigidbody, a boat. But I don't want my character to push that boat w$$anonymous$$le he IN in, because it makes no sense. I've tried setting player's parent to boat gameobject, but it didn't made any changes.

Is there any possible ways to prevent rigidbody from pus$$anonymous$$ng another individual gameobject, without setting it to kinematic?

Thanks.