In reply to JackM92:
> Having climbed plenty of trad but done virtually no specific indoor training I've decided to give it a go this year, but have no idea of how to structure a session productively.
> So far (over 5ish sessions) I've warmed up, 30 - 40 minutes on progressively harder boulder problems before spending 40 - 60 minutes on problems that will take me several attempts to do and often cannot do. Then a few laps of the endurance circuits to finish off.
> Have already seen a big difference on steepish trad routes, with a noticable lack of pump.
You've had great results from very few sessions. I would continue doing exactly what you're doing right now for several more weeks and then judge where your limitations are before thinking of changing anything.
E4s are rarely physically harder than 7a/V3 but you need a wide range of movement skills at your fingertips and confidence to do harder (for you) moves above trad. gear. Focus on training variety - move types, wall angle, hold types, indoors and out - as much as on grade. Keep trying harder routes outdoors. Climb with E5 leaders.
You're climbing E2 consistently and selected E4s. Your aim to climb E4 consistently - in a variety of styles and places - is quite tough. It usually means being capable of climbing selected soft E6s. It might be easier to choose a soft E5 that really suits you and aim for this?
> From the little I've done in the Lakes I thought it was all pretty good! There's a photo of Alain Robert bouldering above a set of knives positioned to impale him if he falls off....might be the sort of drill you're looking for?!
You don't need training advice from us!