Mast foot needed

[rbyham]

So how does one go about finding out what type foot is needed for a deck stepped 1978 Bombay Pilothouse 31? My foot is cracked in two places due to improper placement of compression post. I would love to have the replacement foot in hand when I head to boatyard to pull the mast. My hope would be that it could be done in water at a nearby yard that actually lifts boats with a crane rather than a travel. If I have the new foot in hand it may be a one day job that I would be able to DIY with the yard simply lifting the mast.

So how does one begin to hunt the proper shoe? The Bombay pilothouse probably shares mast with the Bombay CLipper hull of which many were made. I just have no idea how to determine which foot is needed. Any ideas? Thanks in advance...