Sam Elton painting of boat docked on rough water

I found this painting at a Goodwill store for $3. I think it is oil with detail added with pencil. It shows a boat tied to the dock, and the water is pretty rough. There is a house on the hill in the background. There is also a person up there. The painting is signed Sam Elton. It measures about 9.75″ x 11″. It is not dated, but seems to be old. I would guess at 60’s or earlier, but that is just a guess.