In reply to Milesy:
Certain climbing manuals give instruction on solo climbing with a rope (usually in the context of rescuing a stranded partner, but applicable to other situations as well). This won't make you fast and light (quite the opposite) but it could allow you out in partnerless circumstances onto terrain that warrants some protection.
I'd refer to the manuals rather than to a keyboard warrior and I'm not advocating you adopt these procedures but I am throwing it out for discussion:
I recall you need a basic winter rack and as much rope as you're happy carrying but it might work well with something light like 30m of Beal Iceline because you're unlikely to be climbing sustained verticals. The idea is to use the rope to protect the steeper pitches but not the easier ground in between. Here's what I recall (but please don't rely on my ageing faculties):
Find 2-3 bomber anchors at the foot of each pitch (slung boulders are best), rigged for an upwards and (ideally also downwards) pull. Tie both ends into the anchors. Then (in the case of a half rope like the Iceline) flake the rope out carefully and tie into the middle of the rope and tie each strand to your tie-in about 3m and 6m from the two anchored ends and then clove hitch each strand near the anchors to two HMSs and climb as if leading two seconds. Get a runner in early for each strand and continue placing runners and adjusting the clove hitches and short tie-ins (you'll need the slack to make upwards progress) to the top of the difficulty/crux so that any fall factor is minimised. 15m climbing length ought to be plenty to clear grade II/III difficulties, 5m is more likely enough. Then rig top anchors with redundancy for the pitch and downclimb (or abseil even) on a prussik or device removing runners as you go. Finally, release bottom anchors and reascend on your top anchor using a prussik or device. This is fiddly because the knot/device needs feeding with hands already occupied by an axe. On the other hand, you get to do the exciting bits twice!!
The tolerances of a half rope would probably allow for it to be used as a single on short pitches like this which makes for much easier rope management but the manufacturers wouldn't recommend it I'm sure, so use a single rope for easier management if preferred.
This is a laborious technique, and very slow, but, if you want to feel better protected climbing alone, it might suit small pitches of medium difficulty, sandwiched between grade I ground. It wouldn't suit any climb of sustained verticality or pitches without rock anchors. And the complexities of the procedure could lead to confusion, poor rope management, and distracted climbing just where concentration is most required.
Certainly I wouldn't recommend this method as safe. Staying at home is much safer. There is no partner to organise a rescue in the event of a fall resulting in injury. And the complexity of the procedure carries its own risks. But it might provide confidence climbing alone on dangerous ground, in summer and in winter. And I hope I've accurately remembered all the stages. Here's a link to a source on the web:
http://books.google.co.uk/books?id=J5_sl0YR9eUC&pg=PA121&lpg=PA121&...
I'm sure someone far more knowledgeable and experienced than me can point out any flaws/omissions or indeed suggest any improvements to the procedure