In reply to philhilo:
I bailed on North America Wall (El Cap). Trad belays and solo is def more of a faff - bolted belays in Yosemite make that much nicer.
Re; sore hips.. it was me just being stubborn; I thought the Arcteryx trad hardness would be fine and I try not to buy more than I need to. Basically a stiffer harness should be fine - not had a problem hauling/jumaring with other harnesses in the past (which are not wafer thin). At any rate I broke the little buckle (stripped it/folded in two) in a fall so I took it back and now have a stiffer BD hardness that would probably be fine. All in all a bad choice for big wall!
If you suffer sore hips - maybe consider a big wall specific harness - those things are massive and should help somewhat. It would be money well spent - foam mat might be more effort than it is worth.
Post edited at 23:52