Gentlemen,
Thank you for all of your thoughtful (and thought provoking) replies. If one thing is clear, there is no clear right choice.
First, though, a comment on the Catch skill choice. I agree that in hindsight Dodge would have been better. However, I had some success early on playing a very un Dwarf throwing game, and my thought was I would build a Runner/Passer and a Runner/Thrower to build a different dimension to my offence. Unhappily, my Runner/Thrower - who had Pass and 15 SPP -was killed (with an Apothecary roll!)

- shortly after I chose the Catch skill on my Runner/Catcher. Since then, the MA7 Runner has been the ball handler of choice, especially since he got block, hence his rapid accumulation of SPP. Unfortunately, the rookie Runner is still stuck at 0 SPP - it just doesn't make sense to give him the ball ... .
As for the various skill choices, I think I have to make a decision about what role I want to beef up. Currently he is a great two way player - on defence no one expects a Dwarf with Block to blitz 7+ squares! If I want to beef that role up, Strip Ball or Tackle are the choices.
Point taken regarding Kick. It's off the table. As for KOR, I'm tempted to take it, except that on this team that will just make it even harder to develop the other Runner - the MA7 Runner will get the ball even more! I am not denying it is a very useful skill - there was a very thoughtful post from reservoirelves about the value of KOR to a Dwarf team in getting the ball to midfield that had me convinced that was the way to go - but it makes more sense - on this team - to build the other runner up so that he can hand off to my MA7 Runner.
Pass Block - intriguing idea, especially since I have Catch (two chances to intercept), but don't other coaches just pass around it?
Tackle - point taken, and it works on both offence and defence, but I have so much Tackle already! ... but not on a MA7+ player.
Strip Ball - I agree it is tough to capitalize on, but it does increase the chance of a disrupting a dash for a touchdown. If I don't knock down there is a 3 in 6 chance they will drop the ball, which can only lead to good things.
Fend - it does cancel Frenzy and Piling On => live longer. Also, while generally as a Dwarf I want my opponent next to me, my MA7 Runner is an exception to that rule. But if I'm being Blitzed, can't they just use another point of MA and tag me and/or pick up the ball? Fend is not common in my league. It will not be expected nor well understood - which would make it more valuable.
So Tackle, Pass Block, Fend and Strip Ball - I think I'll roll a dice!
