In reply to Flinticus:
I am a veggie boulder who is 47 and goes 3-4 times a week, and I've been climbing for about 15 years now. I almost thought the post was from me for a second! I have climbed font 6c outdoors, and am aiming for Font 7a. I am also a bit on the heavy side (92kg!). My body has changed over time, but more in the chest/shoulders than the arms.
I find my weakness is raw strength, as my technique is pretty good, my fingers are reasonably strong, and I can do some nice dynamic (power) moves with the strength I have. I find my limit is often where I have to lock off, as I just don't have the strength to hold the position and reach. The problem is that I find press-ups etc dull, and am worried that they are not climbing specific enough. So I am trying:
1. Hover hold bouldering - take a problem that is hard but you already know, ideally with a slight overhang. Hover your hand over the next hold for 3 seconds before grabbing it.
2. Touch hold - grab some holds and footholds, then try to touch as many other holds as possible, ideally holding the position but not grabbing the hold. The idea is to vary the start holds as much as possible.
3. Foot touch - same idea but with footholds on a roof/overhang. Start hanging, and then raise a foot to a hold, then bring it back again. Quite tiring for the upper body too, but the idea is to engage the core.
4. Pull ups - slow pull ups locking at 45, 90, 135 and "top" and back down, again locking at the same points (Frenchies?). I try to vary the holds for a bit of interest, but I do find them hard/dull.
I tend to do one of these for 15-30 minutes at the end of a session, and change what I am doing each session. I have just started doing it this year, so I'll have to see how much difference it makes when I get outside in the Spring.
It is worth getting good feedback from other climbers/a coach on where your weaknesses are. I saw a coach about 5 years ago and found it very useful.
I do also take creatine, which does help me build power/strengh - it can hard to get lots of this from your diet as a veggie?
Good luck with it,
Robert