Do you add or change anything before you take your new used boat out the first time?

I am getting a new to me Pontoon boat and plan to hit store this week to get a few things replaced before I hit the water. I kinda figured the items into the cost of the boat.

1) Two new batteries from Academy

2) New fuel line from tank to outboard. Portable tank.

3) New plugs too



Anything else I am missing

Oh. Fire extinguisher