Dont!
At least not down country lanes.....
My engine is running rich atm and so i've been making adjustments and then taking it out for some local runs to see how it works.
Last night i did a late night run in the dark and i can report back that it's a unique and mildly terrifying experience!
The lowness of our cars, how exposed we are as drivers and the fact that other car headlights are level with our rear view mirrors make for a bottom clenching experience and made me glad that i fitted my rear reflectors for that little bit extra.
How have others found it?