On mine the two screws were easily visible. It looks like on yours someone has covered them with fairing compound. The screw heads should be on the starboard side about 1/2 to 3/4 inch below the top of the shoe. (It has been awhile since I did this last so I am relying on memory for the positioning.) It looks like you are going to have to gently chip away at the fairing compound to find them. The top of the shoe is even with the top of the bearing.
I use a ratchet wrench with a large flat-blade screw socket to remove the screws. That is much easier than trying to use a screwdriver under water.
The shoe slides over a flange on the bottom of the skeg. I give the shoe a few gentle taps with a mallet to loosen it up on the flange. Then like I say, you can just wiggle it off as you drop the rudder. Both times I have done this with the boat in the water, I had another guy helping and both of us used dive gear. Having two people to help lower and raise the rudder made it easier. You might be able to accomplish the same thing by having someone topside with a rope on the rudder to take some of the weight off it as you lower and raise it.
Should you have to remove the shoe entirely from the rudder after you take the rudder off, that will require removal of the fairing compound from the rudder below the bearing. That area below the bearing is not an integral part of the rudder. It is just fairing compound and can be removed fairly easily. Then the shoe will slide off the post. Of course the idea is then to put it the compound back when you put the shoe back on. I just left it off on mine and it does not seem to make any difference. I also did not cover the screw heads with fairing compound to make it easier to take the shoe off again if need be.
I am attempting to put a picture with this to show where, approximately, you should find the screw heads and what part of the rudder is just fairing compound should you ever need to completely remove the shoe.
Last edited by kandkharris; 07-22-2009 at 12:50 PM.