Originally Posted by Matt@semmergroup.com
How about putting the bottle jack under the pin so all the weight/pressure is on the pin then from the top, hit the top plate of that area a few times. Use a piece of wood on top so you don't damage the paint. I would do that than use a bigger hammer from underneath. With the boat jacked way up to give you room to swing and a big enough hammer it will have to come out. Watch your thumb!
Interesting idea. I would be a little afraid of damaging the jack though. I may give it a try anyway, although I do not think it will require me to jack it up too high. Really just high enough that all the weight is on the pin. raising it up too high could get a little dangerous.