Andy, you point to a photo I recognize as one from stlucia boatshed. It is/was advertised as a Parker 335, but clearly it is a 325 as can be seem from many details. I’ve also thought placing a windlass there .. above the deepest part of the chain locker.

My P335 already misses the central cleat as the previous owner had a cable coming out there. This cable is connected to a winch in the starboard aft part of the chain locker. The cable can be used in combination with the spinnaker pole and stabilizing lines to top spreaders to lower the mast without a crane. There is also a hinge beneath the foot of the mast.