How much does just the aluminum weight on a 24' pontoon boat?

I know this varies....do you know approx? or where can i find out?How much does just the aluminum weight on a 24' pontoon boat?
i would guess around, 3k to 2450 lbs. just find the displacement and subtract around 1500. there will be your answer. you can get displace ment by the botto of the boat, to the surface of the water, now measure width, and length. add togeather, and now figure a gallon of warters weight, and wallah your weight.How much does just the aluminum weight on a 24' pontoon boat?
Call a pontoon dealer...I found one that said the Dry Weight is 2754 lbs. but all boats are different.