I bought a leaning post from a guy in the industrial area off yamato. I believe it was around $275 and fit perfectly on my 20'.
I don't have pictures or his number right now, but buy a boat trader and you will find him in the misc section. He has a small ad with a broward and palm beach number that offers to deliver. He does all the welding in-house and his wife makes the seats on a big sewing machine. It is good quality and will look great whenever I finish my boat