I've no direct experience of a breech VBAC, but DD was a (planned) home breech birth.
If you can, try and get hold of "Breech Birth" by Benna Waites and/or "Breech Birth: What are my options" by Jane Evans. And google Mary Cronk.
The Benna Waites book has a whole chapter on gentle ways to encourage your baby to turn - including moxibustion, hypnotherapy, the Webster Technique (chiro), plus variations on a theme of "position the mother" (lie head down - such as on an ironing board propped aganst the sofa, crawling around the floor, handstands in a swimming pool, crawling down the stairs - make sure DH is supporting your shoulders!) and "attract the baby" (sit in a warm bath with frozen peas on top of bump, have attractive sounds where you want the head - music or daddy talking, shine light where you want the head).
If you want to look into vaginal breech birth, make sure you are crystal clear on what you are talking about - there is a world of difference between a hands-off vaginal breech birth (as practised by Mary Cronk) and a medicalised vaginal breech delivery, although the terms are sometimes used interchangeably. This article by Mary Cronk details the differences quite nicely (there's a table towards the bottom).
I didn't find the registrar I talked to for the "so your baby's breech" chat to be very well informed regarding vaginal breech birth (in other words I was told ECV or CS, vaginal delivery if you really must) - which isn't too suprising as she'd probably never even heard of one happening in the hospital. If you want to persue that course you'll probably need to talk to the midwifery department direct (50% of breech babies are undiagnosed so they must deliver some, whatever hospital policy says). Or consider using IMs, which is what I did in the end - even if you're not sure that's the right course of action for you, talking to an IM may help you come to a decision (and most of them won't mind talking through options in the least).
If you don't want to try for a vaginal breech birth, you could discuss leaving the CS until you're in labour - that way your DC has the maximum time to turn (and as a 2nd baby where the previous one was cephalic they are very likely to turn). There are pros and cons, but it is an option you could consider.
Fingers crossed your LO turns, and good luck making a decision. There is no right or wrong way to bring a breech baby into the world - just ways that feel better or worse to you.