I have a 24 foot sailboat that was improperly placed on its cradle. The
weigh was placed in an unsupported portion of the hull and has resulted in
what looks like a dented can. The boat sat in this position for many years.
The dents have remained even with completely shifting the boat in the
cradle. I can get to the hull from behind / inside. What is the best way to
repair this?

John