Unsupported is fine. As FWo says, you get all the support you need from the organisers. It's seems pretty self indulgent to me to expect friends/family to waste their bank holiday weekend for my race but I guess that's not everyone's view.
For training, run what you can but don't get too hung up on it. You'll probably find you'll never be able to do as much as you think you should but if you have the right mindset on the day (or days) then it's amazing what you can achieve.
In my experience a bit of a breeze on this course is a good thing. You tend to get a good following wind over the last few miles which always seems stronger than any headwinds earlier.
I've done this several times in trail shoes and road shoes and there's not too much difference in my experience. I did it in entirely grip free racing flats one wet year as they were the only shoes I had at the time and I did struggle over the first few miles on the short, wet grass with a side camber but later on and in the muddy sections I was fine. Best not to stress too much about it.
I've been out of the country for the past 4 years so this is my first BH since 2009 (I've done it 8 times previously including the Seven Sisters events). I'm a bit bemused by the need to preregister and get chip timing. What on earth is that all about? I'm hoping that the event turns out to be the same as I remember but it does seem odd. Also strange that an event that was specifically created for walkers rather than runners seems to have put them very much in a secondary role now and a bit of a shame.
I've always managed to break 4 hours at this one (sub 3:30 once) but lack of running over the last few years tells me that 5 hours might be a more realistic target this time.
Nope. No races planned this year HH. Bonita and I have both packed in our jobs and are going travelling / camping for a year or so in our old Landrover - leaving May 15th. Plan is to head across Europe, middle east and then down through Africa. James will miss his first year at school but I don't think that matters too much. We might enter the Addis Ababa 10K if we're passing through at the right time.