Once in Font I got Lateral Epicondylosis, but I don't seem to have a problem with that anymore.
Serpico - I quite often end up with inflamed Brachioradialis - especially in font. 
What are good "pre-habilitation" exercises to do for this?
Also, if you're out for a weektrip and you start getting it, what's the best course of action? Rest longer between attempts? Stretch it more? Go home? 
I discussed the (bio)mechanics of font elbow with PT. We came to the conclusion that it's probably the position of the arm on the numerous compression and arete moves ie: thumb up as if you were shaking hands, that puts greater emphasis on the BR. Typically you slap into a side hold, and as your body moves backward the elbow joint increases and the elbow flexors are stretched in a forced eccentric contraction. Do this repeatedly and you've got font elbow.
That's not to say that every instance of FE is down to that, I know a couple of people who have elbow trouble related to neck problems, but with font there's a lot of dynamic moves that you do (try) repeatedly with a similar arm position that isn't practised extensively in the UK.
For conditioning exercises try hammer curls with dumbbells or a theraband. 3 sets of ~12 reps. Don't let the exercise get too intense that you start to cause the injury you're trying to prevent.
Take a theraband with you to font and do some light sets as part of a warm up, and regularly during the day. I find that tubegauze elbow supports help, mainly just by keeping the elbow warm I think.
If you start getting pain while you're out there back off, try some slabs, or wall climbs and stay away from anything dynamic. If you don't normally climb 3-4 days in a row you shouldn't expect to be able to do it in font without consequences.