It seems like there is a disagreement about the difference between a tight end playing fullback in the WCO and a more traditional fullback in the WCO.
We all know that a WCO fullback is an offensive weapon, not just a blocker.
Here's my issue with this discussion. Yes, a guy like Byham or Walker can do some of the things that you want from a WCO fullback. We also know that Harbaugh likes his tight ends. So, I can see the argument for Byham or Walker.
Here's the problem I see with the argument....
What many of you are describing is not a WCO fullback. It is an h-back or f-back, depending on the system terminology. This is a hybrid position used to create mismatches in the pass game and block in the run game. There is more to the position, but this is what most are focusing on because it is what they want from a WCO fullback.
Unfortunately, there is one important ingredient missing from this position... the ability to run the football. A WCO fullback needs to be able to run the ball in addition to the other qualities listed. Can Byham or Walker run the football like a running back? I don't really think it's realistic to expect them to do that.
That's why I mentioned Anthony Dixon as a possibility. I think it will be much easier to teach Dixon to lead block than it would be to teach a TE to run the football. I like the other options of signing one of the prototypical WCO fullbacks. We will need another running back anyway and hopefully we finally dump Moran Norris.
Now, I know Harbaugh seems to like his tight ends (that just doesn't sound right

), but that doesn't mean you can't have three or four (or even five if you want to count Brian Jennings

) tight ends on the roster and still have a roster spot for a running back that can play the role of WCO fullback. Why limit yourself?
The CBA issue is obviously going to play a role in what we are able to do this season. We'll have to wait and see how that plays out.
All that said, I trust Harbaugh to make the right decision. Especially if we are going to be keeping Rathman around.