never assume or imagine. the trailer is #1000, the motor and outdrive is 900# or more. add the hull, fuel, fuel tank, gear, etc. and I guarantee you are over 3000# total weight.
in 1988, there was the marlin jon boat (10'), the ski boat (16') and the marlin cuddy (21') The ski boat with the 260hp motor weighs 1950 dry. the ski jet weighs 2100#, and the cuddy weighs 3000#.
so assuming you have the 16' ski boat with the 260hp motor, your dry weight of 1950, about 250# of fuel (30 gallons), 200# gear (life vests, etc.) and your #1000 trailer, your total weight is atleast 3400#