how much is that boat worth. Rough estimate
about $100 (the value of the trailer as scrap) without inspecting to see if there is any value in the hull or motor
the value will be dependent on how it was maintained and repaired over the past 50 years. if the motor runs, if the hull is rot free and specifically your location.
if the boat was garage kept (doesnt look like it), and meticulously washed and dried after every usage, the interior was wiped down with a protectant after every use and the maintenance kept up, about $400-500 for the hull in the mid west about $1200 if your in canada
if the motor was religiously maintained and the compression is perfect and all repairs done with quality parts, about $400 for the motor if you are in the mid west, about $600 if you are in the north east and about $800-$900 if you are in canada
if the trailer was religiously maintained, the wheel bearings packed every year, the coupler maintained and tires changed every 5-8 years about $300 for the trailer.
however if the thing was stored outside, has trees growing in it from all the leave debris and the motor hasnt run in years. the trailer is worth $100 after you pay $100 to scrap the boat.