I have seen that "A frame" approach which people bolted to the loop type attachment on the H23 stanchion base, and have wondered if I should switch to that. The advantage over a single gin pole sticking out the front of the mast base seems to be that it may (or does?) provide some lateral support, like the baby stays on the newer Hunter designed lifting systems. My boat came with a pretty robust aluminum gin pole and thick walled aluminum bracket made by the prev owner, and it works well - except for lateral support. I made a baby stay hookup using stainless wires and a chain loop around the mast; the complexity is getting the attachment points for the lower end of the baby stays to be at the same height as the mast pivot. I ended up making wood supports that I have to use ratchet straps around the hull to clamp down, along with a wire between the two across the deck. It is a PITA to set up, but has helped keep the mast from swaying. Not ideal, and I'd never try to raise it alone.
Those of you who used that A-frame setup, how did you like it? Hoe did you attach the top to the mast so the attachment can slide, but not let the mast move sideways? And as Dave asked, best way to attach to stanchion so it can swivel?