My dad has two still piled up at the old home place. Both aluminum. We used to use them a lot as a kid. One is a flat back you could put a trolling motor on. 17 footer I think. Other is 15 foot aluminum grandpa gave him before he died. Guarantee both are from 60s. I remember when I was 5-6 years old he used leaves to make an outline and painted the flat back camo.