I don't have lights so they aren't an option for me.
The light was going quite quickly at 8.30 this evening and it was a clear sky, however the route for tomorrow takes us into the woods first and then out into the open so as long as we are back by 8.45 we should scrape home. If it is overcast then 8.30 is probably the cut-off.
It is my intention to do the reservoir in the opposite direction to normal so that we get the long uphill drag as a downhill for a change. At the bottom of this we can then turn left and work our way back along the road and then onto the single track, or if time is pressing, turn right and short-cut the single-track.
Two hours is more than enough for this ride even allowing for half an hours chat, but getting off by 6.30 is important.
If Colin can't make it until later then perhaps we could meet at 6.00 and set off at 6.15, do 45 minutes in the woods and meet up with him at about 7.15 where we usually turn left off the road from the car park onto the single track. Mobile phone coverage is a bit varied but should be ok.