A note on mounting pads; I have a single 1/2" bolt that threads up into each leg of the pulpit from below the deck instead of three or four smaller bolts with the heads exposed on deck. The mounting plate for each leg is 3" in diameter with a hole drilled in the middle-the nut is welded over this hole and then inserted into the tubing and the plate is then welded to the tubing. It looks clean and makes a smaller access hole in the salon overhead. (I have used a similar method with stainless handrails only I found a threaded stud with a nylock nut easier to install. -js). The pins are just 1/2" solid round stock welded through the cross bar.
You will be amazed at how many uses you will find for the pins once they are there — I cleat off my lazy jacks, downwind pole topping lift, main halyard when not in use etc etc.