Do not forget to make sure your bike is machanically sound
bang on except its spelt mechanically!!
super solo is all about organisation. I use two colour bottles one has water one has energy drink in. i imagine you won't need a tyre change in a 6hr race?
the best thing is be ready early. I'd aim to have the bike ready a week before – so that if some thing is wrong you have time to sort it (i found my rim was cracked 7 days before 24:12!!).
the night before have an early night. I have a drink – often a G&T (quinnine is good) as otherwise i worry about the race and don't sleep well – i also get shot down on here by the serious racers for this.
do you need to eat in a 6 hour?