Hey Bryan - For your berth, you can find a marina in almost any part of the SF bay, except for those unobtainable beautiful slips on the Marina Green in SF. The wait-list for a 30+ foot boat is multiple years, from what I have gathered. I found a spot in Sausalito with which I am happy because I can get to the marina from my house in 15 minutes and there is a West Marine store 10 minutes away. Every place will have advantages and disadvantages.
I think that in order to remove the axle pin for your topping lift sheave, you need to un-clip the retaining ring (horseshoe-shaped flat metal piece with two tiny holes) shown in your first picture. I think when I did it, I used a screwdriver or two to flex out the open end of the clip and then tried to push it off (without permanently bending or damaging the clip). Apply WD40 or something to the pin to facilitate the sliding. If you can get some needle-nosed pliers on the closed side of the horseshoe, pulling is also possible. If there is a more elegant way, I don't know it. 100% chance that the clip will finally ping off the axle in a random direction, so make appropriate preparations to find where it may land.