Re: Boat strong points?
Well, in lower quality boats the cleats are screwed into the fiberglass and will not take much real stress without pulling out. Higher quality boats have them backed-up with wood or metal plates. Lower quality hulls also have the stern eyes through bolted but only have nuts and washers--no back-up plates. Bow eyes are stronger and usually have a wood back-up plate glassed into the hull. however, many are just nut and washer attached.
MY boats are always modified by me: I crawl up to the front and reinforce the bow eye with at least 1/8 thick aluminum or stainless at least one inch longer than the two bolts. If it is a single bolt bow eye, I replace it with a two leg one. I do the same with the stern eyes. My cleats are always backed-up with at least 1/8 inch aluminum and through bolted with aluminum with a minimum of #10 screws. 1/4 screws if the cleat will take it.