In reply to as646:
> I started climbing 4 weeks ago...
> I can now do more or less all of the V3s at the wall, some V4s and the odd V5.
Astonishing progress, that took me ~10 years.
> What I feel is stopping me from doing more of these harder routes is predominately my crimp strength, certainly to a lesser extent than my open hand grip strength or balance.
Be really careful or you'll be back asking about fingers that won't curl up properly soon enough.
> Every time I ask people how I can get better, I seem to just get the response "just climb as much as you can". Not the most helpful advice... I am climbing as much as I can
In which case it's still good advice but should probably be rephrased: "Patience".
> but I've always liked to apply a little bit of thought and structure to the way I train, regardless of sport - I find I progress exponentially faster this way.
Maybe it's time to focus on improving your technique. Get a good book, partner, DVD or a session with a coach, drop the grade back a bit and really focus on learning how to better exploit the strength you've already developed.
> Essentially what I'm looking for is some advice as to how I can start structuring my training to a) be more efficient, and b) best make me a stronger climber.
My advice would be don't look to be stronger, you're probably strong enough, look to be better, they're quite different things.
jk