I got my hinged mast step back from the welding shop and it looks like it is going to work great. I spent a few hours polishing it up a little although it didn't want to shine up as nice as the swivel did because the angle is extruded and that leaves a lot of imperfections in the surface which makes polishing a real challenge. I decided to hinge the step so I could easily lower the mast if I ran into a vertical clearance problem. Below are a couple different views of the step. The top picture shows the step in the closed position which is the position where the mast is in the upright position. You can see the hinge in the forefront of the picture. The bolt in the top part of the picture is a locking bolt that will lock the mast in the up position along with the forestays.
The bottom view shows the step in the open position which is where the mast would be in the lowered position. The smaller inner box is screwed to the bottom of the mast while the outer angles are screwed to the deck.