In reply to alx:
> Calf, hamstring and hip inflexibility due to a modern sitting down work lifestyle typically leads to feet popping during long reaches or very high steps irrespective of footwear and also leads to people being a lot more mobile in the lower back which can cause other issues.
Very interesting - that pretty much describes me. :/ I hurt my lower back recently, and it is probably way too mobile. Hip flexibility dive bombed after the injury, and still hasn't returned (not helped by my habit of wearing canvas trousers). I hadn't thought I might have always been compensating for low hip flexibility with a wonky lower back.
Luckily my hamstrings/calves have long been known to be my weakness and I've been training them for ages. I did an indoor route the other day that none of my mates could do as they couldn't spread their legs enough!
> Being able to drop the heels with or without shoes with edges without resorting to sticking your backside right out of the wall is possibly the best solution.
This is pretty much just calf flexibility and core strength?
> Regarding bumblies with gaping holes in your worn out shoes, ultimately your are training yourself into a dead end, there will come a time when you need to go slowly to a terrible hold on steep ground and being able to toe pick a credit card edge and maintain body tension throughout the move is essential. It's unlikely to be something you can just learn on the route unless your prepared to siege it.
This pretty much sums up the thread.