Maintenance cost?

Looking for some help on what maintenance I would need to do on a 17' foot aluminum bass boat and what are the usual costs of owning a boat (including trailer maintenance)

What engine have you got on it.? Is it being kept at home or in water??

Its aluminum bass boat, with trolling motor, i kept it at home since last January.

if you just grease the wheel bearings regularly, keep it covered when out of the water and remove the bung to let out any water (if any)

other than that I take it, that the motor is electric, so I'd remove the battery in cold weather and keep it topped up with a full charge.

Sounds like there wouldnt be massive maintenance costs for this type of boat and engine. As mentioned grease thats about it. You lucky I'm paying a decent bit to keep a large in board going